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Home  >>  Products  >>  Film Thickness  >>  Model C Wet Film Thickness Gauge
Model C Wet Film Thickness Gauge

With Optional Handle

Accuracy Certification Available Meets ASTM D1212

Model C Gauge

The Model C Wet Film Thickness gauge is a precision instrument for use in the laboratory, the field and on the production line. It accurately measures the wet film thickness of paint, varnishes, lacquers, adhesives, inks, gel coats and almost any type of wet film applied to flat or cylindrical surfaces.

The model C gauge was developed by Maynard R. Euverard to take full advantage of features covered in patents issued to him under U.S. Patents 2,507,592 and 3,128,558.

The gage is in the form of a wheel, approximately two inches in diameter, made up of three disk sections. Two of the disks are of the same diameter, spaced apart adequately for gage support and are concentric. The third disk, somewhat smaller, is located on the outside of the supporting disks and is eccentric to them. When the gage is rolled over a wet film the eccentric disk will pick up the material only at and below the actual thickness, which permits its immediate and direct reading.




FEATURES TECHNICAL DATA USE MORE INFO PRICE LIST
 

 

Features

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The Model C Wet Film Thickness gauge has the following advantages over the earlier Interchemical and Interchemical Type gauges which function in a similar manner.
  • Accuracy certification available
  • The scale is engraved directly on the measuring disk which is moved to the outside of the gauge and eliminates reading errors of parallax.
  • The measuring disk is separated from a supporting disk by less than half the distance found in other gauges for similar use, which minimizes errors due to deviation from flatness of the supporting surface.
  • All gauge markings are engraved rather than stamped to avoid strains in the gauge which could reduce gauge accuracy.
  • Stainless steel surfaces of the gauge are highly polished to enhance gauge cleaning.
  • The support surfaces of the concentric disks are designed to insure the best possible penetration to the coating support surfaces.
  • Development of new "state of the art" jigs and fixtures insure production of each and every gauge to within the closest possible tolerance consistent with the best available tool and die metal working equipment.
  • The gauge bearings are of special design to provide the lowest possible starting torque and to provide ease of cleaning by removal of one of the finger grips. Ball or roller bearings have been found to be unsatisfactory due to their sensitivity to cleaning solutions.
  • The most modern type of three dimensional coordinate measuring machine with a resolution and repeatability equal to or better than 0.0001 inches is now used in the production and inspection of the gauges.

 

Technical Data

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Technical Data
Gauge Range in Mils Gauge Recommended Use Range in Mils Tolerance Limits In Mils
0 to 2 .2 to 1.8 0.2
0 to 4 0.4 to 3.6 0.2
2 to 12 3 to 11 0.4
10 to 30 11 to 28 0.5
20 to 60 24 to 56 0.5

 

Directions for Use

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Select the Model C gauge with the range which will accommodate the thickness to be measured between 10% and 90% of the gauge range. Grasp the gauge with the thumb and forefinger so that the gauge body is free to turn. Place the gauge on a freshly coated surface at a thickness position greater than expected and roll the gauge to a thickness less than expected.

The gauge may then be lifted and placed on another part of the surface and rolled in the opposite direction on the unused portion of the gauge. Examination of the outside eccentric disk will show thickness values at which pick-up of the coating has taken place and the average of these values may be taken as the true coating thickness.

 

General Information

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Whenever, wherever and however coatings are applied, the thickness of application is of paramount importance. If the film is too thin, the hiding power will be poor, and the substrate will show through. In addition, there will be a reduction in the protective capabilities of the coating.

If the coating is too thick, not only may there be a loss in intended physical properties, but there will be a reduction in coverage and a proportional increase in cost. The use of the Model C gauge will not only promote uniform application of the specified amount of coating material, but will also insure optimum designed results from the coating used at minimum cost.


Side View C Gauge Diagram

 

Gauge Tolerance

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Measuring and support surfaces of the Gardco Model C gauges are over six inches in length. The gauge range is within half of this length and each half contains twenty graduation marks. Due to inherent geometry, the gauge should not be used between the first and last two graduation marks of the gauge range. Between these limits the graduation marks are within the tolerance shown in the following table:

 

Certifications

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  • Calibration is traceable to the U.S. National Institute of Standards & Technology
  • Calibration procedures qualify under Mil STD ANSI/NCSL Z540-1 or MIL-STD-45562A as applicable, and ISO 9000
  • Certification of Calibration available at an additional charge

 

Specification References

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  • ASTM D1212 -"Measurement of Wet Film Thickness of Paint, Varnish, Lacquer, and Related Products."
  • ASTM D823 - "Producing Films of Uniform Thickness of Paint, Varnish, Lacquers and Related Products on Test Panels."
  • ASTM D1005 - "Measurement of Dry Film Thickness of Organic Coatings."
  • ASTM D1186 - "Measurement of Dry Film Thickness on Non-Magnetic Coatings applied to a Ferrous Base."
  • ANSI/NCSL Z450-1 OR MIL-STD-45662A ISO 9000
  • ASTM D1400 - "Measurement of Dry Film Thickness of Nonmetallic Coatings of Paint, Varnish, Lacquers, on a Nonmagnetic Base."
  • ASTM E376 - "Recommended Practice for Measuring Coating Thickness by Magnetic Field or Eddy Current (Electromagnetic Test Methods)."
  • FTMS 141a, Method 6141c - "Dry Film Thickness (Magnetic Type gauges)."
  • FTMS 141c, Method 6183 - "Dry Film Thickness (Mechanical Type gauges)."

 

Optional Handle for the Model C Gauge

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IC Gauge Handle
Handle

A brand New ergonomic gage handle is now available for the Model C gage. It offers a very comfortable, precision grip handle that can be quickly and firmly attached to or removed from the Model C gage. It is useful as an aid in aligning the gage on the test surface.

When the gage is used on a moving surface, the handle aids the user to keep his hand at a distance from such surface. It also may prevent the possibility of dropping the precision instrument onto a costly rotating roller.

The handle is about six inches long and is produced from solid bar stock aluminum. The handle axle is designed to accept all Gardco produced Model C gages and IC gages.

The gage is held in place on the handle with one of the gage grips so it is readily removable for cleaning or for reassembly for use of the gage with grips only.

 

Conversion Table

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Conversion Table - 1 Mil = 0.001 Inches = 0.0254001 Millimeters = 25,4001 Microns
Mils Millimeters Microns   Mils Millimeters Microns   Mils Millimeters Microns
0.1 0.0025 2.5 5.75 0.146 146.0 22.5
0.572 572.0
0.2 0.0051 5.1 6.00 0.152 152.0 23.0 0.584 584.0
0.3 0.0076 7.6 6.25
0.159 159.0 23.5 0.597 597.0
0.4 0.0102 10.2 6.50 0.165 165.0 24.0
0.610 610.0
0.5 0.0127 12.7 6.75
0.171 171.0 24.5 0.622 622.0
0.6 0.0152 15.2 7.00 0.178 178.0 25.0
0.635 635.0
0.7 0.0178 17.8 7.25
0.184 184.0 25.5 0.648 648.0
0.8 0.0203 20.3 7.50 0.191 191.0 26.0 0.660 660.0
0.9 0.0229 22.9 7.75
0.197 197.0 26.5 0.673 673.0
1.0 0.0254 25.4 8.00 0.203 203.0 27.0 0.686 686.0
1.1 0.0279 27.9 8.25
0.210 210.0 27.5
0.699 699.0
1.2 0.0305 30.5 8.50 0.216 216.0 28.0
0.711 711.0
1.3 0.0330 33.0 8.75
0.222 222.0 28.5 0.724 724.0
1.4 0.0356 35.6 9.00 0.229 229.0 29.0
0.737 737.0
1.5 0.0381 38.1 9.25
0.235 235.0 29.5
0.749 749.0
1.6 0.0406 40.6 9.50 0.241 241.0 30.0 0.762 762.0
1.7 0.0432 43.2 9.75
0.248 248.0 31.0 0.787 787.0
1.8 0.0457 45.7 10.00 0.254 254.0 32.0 0.813 813.0
1.9 0.0483 48.3 10.25
0.260 260.0 33.0 0.838 838.0
2.0 0.0508 50.8 10.50 0.267 267.0 34.0
0.864 864.0
2.1 0.0533 53.3 10.75
0.273 273.0 35.0
0.889 889.0
2.2 0.0559 55.9 11.00 0.279 279.0 36.0 0.914 914.0
2.3 0.0584 58.4 11.25
0.286 286.0 37.0
0.940 940.0
2.4 0.0610 61.0 11.50 0.292 292.0 38.0
0.965 965.0
2.5 0.0635 63.5 11.75
0.298 298.0 39.0 0.991 991.0
2.6 0.0660 66.0 12.0 0.305 305.0 40.0
1.016 1016.0
2.7 0.0686 68.6 12.5
0.318 318.0 41.0
1.041 1041.0
2.8 0.0711 71.1 13.0 0.330 330.0 42.0 1.067 1067.0
2.9 0.0737 73.7 13.5
0.343 343.0 43.0
1.092 1092.0
3.0 0.0762 76.2 14.0 0.356 356.0 44.0
1.118 1118.0
3.1 0.0787 78.7 14.5
0.368 368.0 45.0 1.143 1143.0
3.2 0.0813 81.3 15.0 0.381 381.0 46.0
1.168 1168.0
3.3 0.0838 83.8 15.5
0.394 394.0 47.0
1.194 1194.0
3.4 0.0864 86.4 16.0 0.406 406.0 48.0 1.219 1219.0
3.5 0.0889 88.9 16.5
0.419 419.0 49.0
1.245 1245.0
3.6 0.0914 91.4 17.0 0.432 432.0 50.0
1.270 1270.0
3.7 0.0940 94.0 17.5
0.445 445.0 51.0 1.295 1295.0
3.8 0.0965 96.5 18.0 0.457 457.0 52.0
1.321 1321.0
3.9 0.0991 99.1 18.5
0.470 470.0 53.0
1.346 1346.0
4.00 0.102 102.0 19.0 0.483 483.0 54.0 1.372 1372.0
4.25 0.108 108.0 19.5
0.495 495.0 55.0
1.397 1397.0
4.50 0.114 114.0 20.0 0.508 508.0 56.0
1.422 1422.0
4.75 0.121 121.0 20.5
0.521 521.0 57.0 1.448 1448.0
5.00 0.127 127.0 21.0 0.533 533.0 58.0
1.473 1473.0
5.25 0.133 133.0 21.5 0.546 546.0 59.0 1.499 1499.0
5.50 0.140 140.0 22.0 0.559 559.0 60.0 1.524 1524.0

 

Prices

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Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices
WF-2205 0 - 2 Mils - Smallest Grad. = 0.1 MILS $475.00
WF-2210 0 - 4 Mils - Smallest Grad. = 0.2 MILS 375.00
WF-2215 2 - 12 Mils - Smallest Grad. = 0.5 MILS 355.00
WF-2220 10 - 30 Mils -Smallest Grad. = 1 MIL 355.00
WF-2225 20 - 60 Mils - Smallest Grad. = 2 MILS 355.00
WF-223310 Model C Wet Film Thickness Gauge Handle 195.00
WF-2200/CERT Gauge Certification to ANSI/NCSL Z540-1 or MIL-STD-45662A as applicable (All ranges)
162.00
WF-2000/CASE Hard protective case with dense foam lining WF-2244 29.95
All gauge ranges engraved with 20 divisions & furnished with a mil to micron conversion table.



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