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OG202 Tooke Paint Inspection Gauge (aluminium)


The OG202 Tooke Paint Inspection Gauge is used to examine a cross-section of cured coatings to measure thickness or analyse coating problems. Using a special cutting tool integral to the gauge, a small, precision V-groove is made through the paint film and into the substrate. This groove is observed with an illuminated, 50-power microscope bearing a measuring scale, making possible the direct measurement of coating thickness. The Tooke Gauge has been used to assess sandblast, measure plating and paint thickness on ceramics, metal, wood, concrete and plastics, as well as the protective backing on mirrors.

The OG202 is fitted with an universal microscope with a measuring reticule permitting measurements in mils, microns, and millimeters. Three precision Tungsten-carbide cuttings tips are mounted in the side of the anodized-aluminim gaug body.

The Tooke Paint Inspection Gauge is used for coatings evaluation in accordance with ASTM D4138 - 07a:  Standard Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means

Each Tooke Gauge comes in a hard plastic carrying case, with spare batteries and bulb, marking pen, hex wrench and a technical data sheet. Standard cutting tips are 1X, 2X, and 10X, but the gauge can be purchased with an arrangement of any three tips to accommodate specific applications. An optional 5X blade is also available.

Reticle Specifications:

Cutting tip

Maximum Coating
Thickness

Precision of thickness
determinations

One division on the reticle scale represents:

100 mils

2500 µm

± 0.25 mils

+ 5 µm

1.0 mil

20 µm

20 mils

500 µm

0.13 mils

+ 2.5 µm

0.5 mil

10 µm

10×

3 mils

75 µm

0.025 mils

+ 0.5 µm

0.1 mil

2 µm

 

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