Moisture Meter Instruction Manual
Contents
1. A Although the various drying processes for green lumber can leave wet cores and pockets moisture continues to pass from fiber to fiber within the wood until it has equalized throughout the whole board Determining if a board or load of lumber will equalize within tolerance levels can be difficult and tricky but Wagner Moisture Meters provide this information automatically Penetrating deep into the wood they mathematically 12 determine equalized moisture content and allow the user to check truckloads of material in minutes For even more convenience many companies use their Wagner Hand Held Meters to read through the plastic wrapping around the wood on new deliveries before they allow unloading 4 Where are Readings Taken Q Where is the reading taken with a pin type meter With a Wagner Hand Held A Pin type Meters take their measurements between the tips of the pins only if using insulated pins When using non insulated pins you are getting a reading between the pins at only one point between them at which you have most the moisture In contrast Wagner Hand Held Moisture Meters generate a three dimensional field and give an average reading of the material within the sensing area and depth of penetration for the model of meter you are using 5 Surface Moisture Q Is my Wagner Moisture Meter affected by surface moisture A Most moisture meters can be affected by standing water or visible water on the board You shoul2. Your Wagner L606 meter measures the moisture content in a 1 inch wide by 2 inch long by 3 4 inch minimum thick volume of your wood The Wagner L607 meter measures a 1 2 inch minimum thick volume of wood This closely approximates the full thickness cross section method used when performing the ASTM D 4442 92 Oven Dry lab test for determining moisture content in wood This ASTM standard and its international counterparts is the standard to which all moisture meters for wood are compared for accuracy Wagner technology has been proven in many studies to provide some of the most accurate results in the industry when compared to this worldwide standard Other important features of Wagner hand held meters include The Wood Friendly L606 and L607 meters use advanced electromagnetic wave technology to accurately measure wood moisture content e Virtually unaffected by wood temperature or surface moisture Confirmed in university study Information available upon request Contact Wagner technical support for guidelines when wood is frozen Instructions TO OPERATE press and release the ON button Take readings by pressing the bottom of the meter to the wood surface The meter will automatically shut off after 60 seconds of inactivity 1 Read the MC on the panel meter Figurel If the wood is Douglas Fir the scale reading indicates the MC in the wood 2 If the wood is not Douglas Fi
3. Non wood species can be measured by using the meter reading as a relative value such as in go no go applications or when determining if one measurement area contains more moisture than another i e measurements that do not require a high absolute accuracy SG formulas can t be applied to non solid wood species due to the presence of glues and resins which cause a non linear moisture content curve If greater accuracy is required the ASTM oven dry procedure can be used to determine a meter correction value for non solid woods Please contact Wagner Electronics at 541 582 0541 for additional information on species corrections if needed 9 Measuring Veneer Checking the moisture content in veneer You can check the moisture content of veneer with your Wagner hand held moisture meter as follows 1 Put veneer into a tight stack and separate the stack by at least 3 inches to 4 inches from the rest of the stack Vary the thickness of the stack according to unit penetration depth example L606 has a 3 4 depth of penetration Measuring a stack less than the scan depth of the meter will give you a reading that is lower than the true moisture reading Refer to the species adjustment section in your manual for the wood you are using 2 Electro Static Discharge ESD needs to be prevented as Wagner s warranty doesn t cover ESD damage The instruments are tested to withstand a 15 KV static charge but not the typical 1
4. however because Wagner Electronic Products Inc has no control over the manner in which the unit will be used it makes no warranty that the meter will stay in calibration for any specific period of time Wagner Electronic Products Inc recommends returning the unit to the factory for a diagnostic checkup and recalibration in the event the meter is dropped or otherwise damaged or the meter accuracy is suspect 24 This warranty is in lieu of all other warranties whether oral or written express or implied Any implied warranties including implied warranties of merchantability and fitness for a particular purpose are excluded If this product is not in good working order as warranted above the customer s sole remedy shall be repair or replacement as provided above Wagner Electronic Products Inc shall not be liable for incidental or consequential damages for the breach of any express or implied warranty with respect to this product This warranty is personal to the customer purchasing the product from Wagner Electronic Products Inc and is not transferable This warranty also gives you specific legal rights and you may also have other rights which may vary from state to state The agents and employees of Wagner Electronic Products Inc are not authorized to make modifications of this warranty or additional warranties binding on Wagner Electronic Products Inc Accordingly additional statements whether oral or written exce
5. lower edge of the DRY BOX Figure 3 Physical Figure 1 Zero Figure 2 Physical Zero Adjust until needle sits on lowest mark Figure 3 Zero Dry Box Zero Adjust until needle sits on lower edge 23 of Dry Box Wagner Electronic Products Inc Limited Warranty Wagner Electronic Products Inc warrants this product against defects in material and workmanship for one 1 year from the date of purchase subject to the following terms and conditions Wagner s liability under this warranty shall be limited at Wagner s option to the repair or replacement of this product or any part thereof which is demonstrated to be defective To exercise this warranty customer must telephone fax or e mail Wagner s Customer Service Department for a RMA Return Materials Authorization number and factory instructions for shipment This limited warranty does not apply if the product has been damaged by accident negligent handling misuse alteration damage during shipment or improper service Wagner Electronic Products Inc shall in no event be liable for any breach of warranty or defect in this product which exceeds the amount of purchase price of the product Wagner Electronic Products Inc shall not be liable for incidental or consequential damages for the breach of any express or implied warranty with respect to this product or its calibration With proper care and maintenance the meter should stay in calibration
6. Gravity contd Example Length 10 in 10 in 12 in 0 833 ft Width 7 5 in 7 5 in 12 in 0 625 ft Thickness 1 5 in 1 5 in 12 in 0 125 ft Volume L x W x T 0 833 x 0 625 x 0 125 0 065 cu ft Weight 20 oz 20 oz 16 oz 1 25 Ib Specific Gravity Weight Volume Specific Gravity of water 1 25 Ib 0 065 cu ft 62 34 Ib cu ft 0 31 In order to ensure that the value obtained for the specific gravity is statistically significant a number of pieces must be measured and the average determined Use this value of specific gravity with the table provided to find the actual adjustment factor for your species of wood 22 Zero Adjusting WARNING WARNING WARNING WARNING WARNING Do Not Use This Section of the Manual Unless Absolutely Necessary BECAUSE of the stability of the circuit in these products a person virtually never has to adjust the zero setting ZERO ADJUSTING a meter is a two step process 1 With the power OFF adjust the PHYSICAL ZERO Figure 1 until the needle rests precisely on the lowest mark on the scale Figure 2 2 Remove the DRY BOX ZERO cap Figure 1 Hold the meter in midair so that the bottom is level and several feet from any object Press and release the ON button this will cause the needle to rest near the lower edge of the DRY BOX Insert a small screwdriver into the hole and adjust the DRY BOX ZERO until the needle rests precisely on the
7. 50 250 KV found in a veneer charge The veneer table should be earth grounded with a metal wand attached by wire to the table The wand must then be run up and down the edge of a veneer stack to discharge static or the person using the moisture meter must have a Velcro wrist band with a tethered strap which is grounded These same static precautions apply to lumber moving from a planer the hand meter is not an in line measurement system This unit is meant to check lumber while stationary If these guidelines are adhered to the risk of ESD damage to your moisture meter is greatly reduced or eliminated Please call the factory if you have any questions or concerns about this information 10 Meter Calibration The meter has been calibrated at the factory and should not require re calibration If you need to have the calibration verified please contact the Wagner Electronics Sales Department to purchase a calibration verification block if you don t already have one Should the meter need to have a calibration adjustment it will need to be returned to Wagner Technical Services Department Meter Storage For a long service life it is important to store your meter properly Avoid excessively hot or cold locations and keep the meter in the case provided Do not store the meter in an area with excessive electro magnetic interference such as near an electric motor or where it could be crushed such as in front of a forklift Do not
8. Confirmed in university study Information available upon request 5 Features The Wagner L606 Inspector Moisture Meter Designed to fit comfortably in a jacket pocket or toolbox the L606 is ideal for anyone who needs a professional quality tool to inspect wood or wood products for accurate moisture content It is popular with installers wood workers cabinet and furniture makers contractors and quality assurance inspectors Deep penetrating pin free inspecting ends wood abuse e Quick whole board scanning e Proven technology used by agencies to grade a large percentage of U S wood e Accurate and consistent confirmed in university study The Wood Friendly L606 uses advanced electromagnetic wave technology to accurately measure wood moisture content from 5 to 30 to a depth of 3 4 There are no pins to abuse wood and leave ugly holes Confirmed in university study Information available upon request 6 The Wagner L607 Dual Depth Moisture Meter Represents the latest in electromag netic field EMF technology This meter is ideal for the professional concerned about accurate moisture measurement of finished wood products and for managing the application of waterborne finishes Fast operating quickly scan large portions of wood for a more accurate picture of moisture content e When using waterborne finishes know exactly when to recoat and av
9. Moisture Meter Instruction Manual Wagner Models L606 L607 AGNER ELECTRONICS 1 800 944 7078 Table of Contents Introduction Pages 2 3 Instructions Pages 4 5 Features Pages 6 7 Taking Measurements Page 8 Species Corrections Measuring Veneer Page 9 Page 10 Meter Calibration Page 11 Meter Storage Page 11 Questions amp Answers Pages 11 18 Pages 19 20 Pages 21 22 Page 23 Commentary on Species Adj Table Determining Specific Gravity SG Zero Adjusting Warranty Pages 24 25 Repair Service Page 26 FCC Compliance Statement 0 00 0 Pages 27 28 Introduction Congratulations You have purchased one of the most accurate moisture measurement instruments for wood in the world Using patented electromagnetic wave technology Wagner hand held meters have been proven by universities and institutes worldwide to provide superior measurement results Utilizing an electro magnetic field your Wagner moisture meter measures a relatively large cross sectional area each time you take a reading giving you a far better representation than other technologies of the true moisture content of your wood Pin type meters do not 2 Introduction cont d provide this only measuring a very small area and only at a particular depth Very short non insulated pins are especially prone to just reading the surface of your wood
10. ance statement This equipment does not exceed class B limits per radio noise emissions for digital apparatus set out in the Radio Interference Regulation of the Canadian Department of communications Operation in a residential area may cause unacceptable interference to radio and TV reception requiring the owner or operator to take whatever steps are necessary to correct the interference Avis de conformit aux normes du minist re des Communications du Canada Cet quipement ne d passe pas les limites de Classe B d mission de bruits radio lectriques pour les appareils num riques telles que prescrites par le R glement sur le brouillage radio lectrique tabli par le minist re des Communications du Canada L exploitation faite en milieu r sidentiel peut entrainer le brouillage des r ceptions radio et t l ce qui obligerait le propri taire ou l op rateur prendre les dispositions n cessaires pour en liminer les causes 28 Notes 29 Notes 30 Notes 31 WAGNER ELECTRONICS Wagner Electronic Products Inc 326 Pine Grove Road Rogue River OR 97537 USA Phone 541 582 0541 Fax 541 582 4138 E mail sales wwwagner com Visit us on the Web at www moisturemeters com 2004 WEPI Wagner Part 500 60601 002 Rev B
11. d always wipe off as much excess water as possible Once the standing water is removed your Wagner Moisture Meter will read slightly higher than normal whereas other types of meters can show greatly exaggerated readings An exception to this is the Wagner Model L607 This unit was designed to measure surface moisture to test the cure of waterborne finishes 13 Questions amp Answers cont d NOTE If water is allowed to soak into the wood it will naturally show higher moisture content If a piece of wood is quite rough it will soak up the water quite readily affecting readings for all meters 6 Narrow Lumber Q What is the narrowest piece of lumber I can measure accurately with the Wagner Hand Held Moisture Meter A This would depend on the model you are using The narrowest piece you could measure would be a minimum of 7 8 inch 7 Board Thickness Q What board thickness can I measure A This would depend on the model you are using Wagner offers models with 1 2 inch 3 4 inch and 1 inch penetration 8 Meter Orientation Q What about the orientation of the meter on the wood A Your Wagner moisture meter uses advanced electromagnetic wave technology and is virtually unaffected by orientation cross grain or with the grain on the wood except for the model L609 which requires measuring parallel to the grain 14 9 Meter Ruggedness Q How rugged is my Wagner moisture meter A The Wagner moisture meters are
12. designed for compact convenience They can be damaged by being dropped or slammed down hard on wood surfaces as can any meter If a large volume of wood is to be measured an in line system should be used 10 Meter Safety Q Is the Wagner technology safe to use A Wagner s electromagnetic wave technology produces less electromagnetic radiation than standard house wiring 11 Wagner Vs Pin Type Meters Q How can I take accurate moisture readings without sticking pins into my wood Why doesn t my new Wagner Hand Held Meter read the same moisture content as my old pin meter A Pin type meters work on a resistance principle that basically measures the flow of electricity through a substance This method is subject to many environmental variables that can dramatically affect moisture readings such as chemicals in the water trapped within the wood and the temperature of the wood Pin type meter readings often need to be corrected for any difference in temperature above or below 70 degrees F Wagner Hand Held Moisture Meters use advanced electro magnetic wave technology and are virtually unaffected by surface moisture or temperature 15 Questions amp Answers cont d The Wagner model L607 has been designed to be sensitive to surface moisture which takes the guesswork out of when to recoat with waterborne finishes 12 Relative Humidity Q What are the effects of relative humidity on Wagner Hand Held Moisture Meter reading
13. ed in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television equipment reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna Move the equipment away from the receiver e Plug the equipment into an outlet on a circuit different from that to which the receiver is powered If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions CAUTION Only equipment certified to comply with Class B computer input output devices terminals printers etc should be attached to this equipment Finally any changes or modifications to the equipment by the user not expressly approved by the grantee or manufacture could void the user s authority to operate such 27 FCC Compliance Statement cont d equipment This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Canadian Department of Communications compli
14. he weighing procedure used in the ASTM D2555 by standing timber volume can be used Species adjustment is not recommended for any species group having a broad range of species specific gravity values There are no recognized limits on species group species adjustment Species adjustment for species groups should be used with knowledge on the variability on species involved and the affect of it on species adjustment If the species mix in the lumber production of a species group is controlled or known to have specific gravity different from that used for the species group a better estimation of species adjustment can be determined using the known specific gravity in the above species correction equation 20 Determining Specific Gravity Determining the Adjustment Factor for an Unknown Species The adjustment table based on specific gravity of solid wood is provided on the following page If you don t know the species of the wood you are using or the specific gravity differs from the handbook because of a different growing region use the following procedure Determining the Specific Gravity 1 Select a sample of wood with all edges being true Carefully measure the dimensions of the sample using a caliper You will need the length width and thickness 2 Convert these measurements to feet 3 Carefully measure the weight of the sample 4 Convert the weight to pounds 5 Calculate specific gravity 21 Determining Specific
15. ity of solid sawn lumber varies within the piece and among pieces In the OSU study the average specific gravity for each species differed from the individual sample by plus or minus 1 to plus or minus 8 For general applications average specific gravity values can be found in the Wood Handbook USDA Agriculture Handbook No 72 1999 Except for one species 19 Commentary on Species Adjustment Tables cont a for which the experimental value is 7 higher the species overall average specific gravity values obtained in the OSU study are comparable with those in the Wood Handbook The exception may be caused by unknown biases in the sampling scheme The Wood Handbook values are used in the tables except for the imported species unless otherwise noted Species adjustment can be determined for lumber sorted or otherwise known to have specific gravity different from the species average One example is lumber graded under the Dense rules If the specific gravity of a lumber sample is known species adjustment can be determined by the species adjustment equation The species adjustment equation provides a way to expand the use of your Wagner Hand Held Moisture Meter for lumber of any species groups having similar species specific gravity values One example is Hem Fir For a species group one way to determine the species adjustment is by the use of a weighted average of the individual species average specific gravity values T
16. leave the meter in an operating kiln during the drying cycle Questions amp Answers 1 Wagner Technology Q I m nervous about buying a new technology How long has Wagner Electronic Products been designing and manufacturing this type of moisture meter A Since 1966 Wagner Electronic Products has been providing quality moisture measurement equipment Wagner is the leading supplier of moisture measurement equipment for the primary forest products industry Closely scrutinized and approved by numerous university studies and used for years by professional wood grading 11 Questions amp Answers cont d associations Wagner s meters continue to prove reliable and consistent with unsurpassed convenience and ease of use 2 Theory of Operation Q How do Wagner Hand Held Moisture Meters operate A Wagner Hand Held Moisture Meters send technologically advanced electromagnetic radio waves deep into the wood without leaving destructive holes Known around the world for speed and accuracy Wagner meters supply instant readings scanning large amounts of board feet in seconds Virtually unaffected by temperature and humidity they scan right through finished products For frozen wood with up to 15 moisture content accurate measurements can be obtained When the frozen lumber moisture content is suspected to be over 15 contact Wagner technical support 3 Gradients and Wet Pockets Q What about gradients and wet pockets
17. o take a valid measurement this sensing area must be completely covered with the wood you are measuring If the sensing area is not completely covered your moisture reading will be inaccurate Additional meter corrections may be necessary if you are measuring Raft Wood salt water permeated or lumber treated with Copper Chrome Arsenic CCA or Ammonical Copper Quantenary ACQ The Wagner model L607 is not designed for use on rough sawn lumber Contact Wagner Technical Services for further information for these applications 8 Species Corrections The dry specific gravity density values for a species are based on the best current world data and are used to determine the species correction factor within the meter The values provide average density values for the species A coefficient of variation COV of about 10 describes the variability inherent in many common domestic US species If the specific gravity of your lumber cannot be found with the resources listed in the tables provided or you are dealing with an unknown species the value may be determined by referring to the Determining Specific Gravity section of this manual Additional resources are the Forest Products Lab at http www fpl fs fed us and the Wood Handbook at http www fpl fs fed us documnts fplgtr fplgtr1 13 fplgtr1 13 htm The Wagner hand meters can be used to measure non wood materials if the density is similar to wood products
18. oid costly waiting and guessing when sealer and finish are dry The L607 is especially calibrated to read waterborne finish applications and yet work as a regular wood moisture meter when doing inspections e Handy to use fits comfortably in your hand and stores easily in a jacket pocket or toolbox e Useful for inspections of all types including solid and laminated products 1 2 scan depth e Accurately measure wood moisture content from 5 to 30 using advanced electromagnetic wave technology e NO PINS to abuse wood and leave ugly holes 7 Taking Measurements Be sure to press down firmly on the center of the meter with approximately 3 pounds of pressure to ensure good sensor plate contact with the wood surface This is especially important on rough sawn lumber Do not take readings where there is a noticeable defect or knot in the lumber If there is visible surface moisture or water wipe off any excess and let the surface of the wood dry out for a couple of minutes then take the reading If possible turn the board over and measure the other side If the thickness of the piece is greater than 1 1 2 inches 1 inch with L607 itis a good idea to take measurements on both sides Ensure that there is nothing especially your hand or metal under the material you are measuring The actual moisture sensing area is a 1 inch by 2 2 inch rectangle on the meter s backside opposite side of the panel meter In order t
19. ood or OSB A Wagner has established guidelines for measuring these materials See the Plywood and OSB Correction Factors section of the Species Adjustment Table manual for guidelines on this procedure 17 Temperature Q Are the readings that I take with my Wagner meter affected by the temperature of the wood like those taken with a pin type meter A Wagner s proven moisture meter technology is virtually unaffected by wood temperature Pin type meters and other unproven pin free technologies can be 17 Questions amp Answers cont d greatly affected by wood temperature which often require corrections 18 Accuracy Q How accurate are the Wagner Hand Held Meters A The Wagner Moisture Meter is as accurate or more accurate than any moisture detector that is on the market This can be verified by several university studies 19 Correct Moisture Content Q What is proper moisture content for wood What moisture content is considered too high or too low A There is no one right answer for this question As a rule different woods and their uses determine the moisture content For instance if the wood is to be used in construction as a stud for building the moisture content requirement could be 15 to 19 If the wood is to be glued and it is too dry it will not bond if it is too wet it will not hold Ideally the moisture content of wood to be used for indoor furniture is between 6 and 8 Note Detailed inf
20. ormation on this subject is available in the video section of the Moisture Measuring amp Management Reference Library CD supplied with your moisture meter In addition you can contact your local university s forestry department the associations supporting your industry s professionals or the Forest Products Research Laboratory in Madison WI 608 231 9200 18 Commentary on Species Adjustment Tables In 1992 a study was conducted at the Forest Research Laboratory of Oregon State University on species correction for the Wagner Hand Held Moisture Meters The species tested were Douglas Fir Lodgepole Pine Western Red Cedar Western Hemlock White Fir Western Larch Engelmann Spruce and White Oak Three to four 40 piece samples of each species were tested Specific gravity was found to be the primary factor on species adjustment A species equation as a function of specific gravity and the meter reading was obtained using multiple regression technique R square 0 95 as follows AF 8 77 0 25 MM 15 86 SG 0 62 SG MM in which AF Adjustment Factor MM Meter Reading SG Species average Specific Gravity in oven dry weight and 12 moisture content volume basis The species adjustments provide the adjusted moisture measurements that are based on the species adjustment determined using the species adjustment equation with rounding to the nearest 0 5 Wood is not a uniform material Specific grav
21. pt written statements from an officer of Wagner Electronic Products Inc do not constitute warranties and should not be relied upon by the customer Wagner Electronic Products Inc shall in no event be liable for any breach of warranty or defect in this product which exceeds the amount of the purchase price of the product 25 Repair Service In the event of damage or failure contact the Wagner Electronics Technical Services Department to arrange for repair and to acquire RMA Number with the appropriate repair form Your meter will be repaired calibrated and returned promptly When you send your meter be sure it is insured We cannot be responsible for items that do not reach us The Technical Services Department is available during normal business hours 7 30 a m to 4 00 p m Pacific Standard Time Monday through Friday Voice 541 582 0541 Fax 541 582 4138 E Mail support wwwagner com Mail Technical Services Department Wagner Electronic Products Inc 326 Pine Grove Road Rogue River Oregon 97537 USA WAGNER ELECTRONICS 26 FCC Compliance Statement This equipment has been tested and found to comply within the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in residential installations This equipment generates uses and can radiate radio frequency energy and if not installed and us
22. r you must make a species correction SPECIES ADJUSTMENT TABLES are provided When measuring a species other than Douglas Fir use the tables to locate your species and corresponding meter reading Example Your meter reading is 13 Figurel Your species is Basswood American Locate your species on the tables provided Find the species in the appropriate row Find the meter reading in the appropriate column Where row and column intersect is the actual reading for Basswood American 16 5 4 Figure 1 Instructions cont d THE LOW BATTERY light will come on when the battery needs replacing Replace with either a 9V alkaline battery Observe correct polarity CALIBRATION is factory set Factory calibration can be verified using a calibration verification block CVB The CVB is for calibration verification only NEVER calibrate your moisture meter to this device Additional Instructions for Model L607 ONLY WATERBORNE FINISHES can be quickly scanned between applications 1 Simply check the base moisture content of the wood before applying a waterborne finish 2 After application of finish scan representative area of the wood and note the elevated moisture content 3 Re scan at regular intervals until the moisture reading once more drops to the base level first recorded before applying finish 4 When the reading matches the base level reading the wood is ready for recoating
23. s A As long as there is no condensation on the bottom surface of the instrument there is virtually no effect from changes in relative humidity 13 Calibration Q Do the meters on the Wagner Hand Held products ever require readjustment Does my Wagner Hand Held Moisture Meter need to be calibrated If so how often must it be done A Wagner Meters are calibrated at the factory With proper care the meters stay in calibration In the event that the meter has been dropped or you suspect for any reason that the meter is out of calibration a calibration verification block is available Anytime that the meter is not reading correctly on the calibration block it should be sent to the factory for calibration 14 Veneers Q Can I use my Wagner moisture meter to measure veneers 16 A Measuring moisture in veneer requires specific procedures Wagner has established guidelines for measuring these materials See the Measuring Veneer section of this manual for guidelines on this procedure 15 Rough Vs Smooth Lumber Q Can I use my Wagner meter to measure rough sawn lumber A When measuring rough sawn lumber press down firmly on the center of the meter with approximately 3 pounds of pressure to ensure good sensor plate contact with the wood surface Do not take readings where there is a noticeable defect or knot in the lumber 16 Sub Floor Material Q Can I use my Wagner meter to measure sub floor materials such as plyw
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