The Micro-Metrics OG204 / OG214 Plastic Tooke Gauge IV is a precision tool for inspection and dry-film thickness measurement (in accordance with ASTM D4138) of single or multiple coats on any substrate, and for microscopic observation and measurement of substrate and film defects. The OG214 Tooke Gage uses an illuminated 50-power microscope equipped with a universal scope with a measuring reticle that accommodates measurement in mils, microns, and millimeters. This gauge mounts tungsten carbide cutting tips for precise incision of the work surface. Direct measurement of total dry-film coating thickness and thickness of individual coats of paint is a unique capability of the Tooke Paint Inspection Gage. Thus, in addition to routine use, it often serves as a referee instrument to calibrate indirect or non-destructive thickness measuring instruments. Applications: The Tooke Gage has been used to assess sandblast cleaning work, to measure plating and paint thickness on ceramics, metal, wood, and concrete, and even to measure protective backing thickness on mirrors. It is virtually the only tool for measuring paint on plastics. The quality of the incision in the film discloses much about the characteristics of the brittleness and adhesion of the material. Other uses include assessment of substrate conditions and coating adhesion, and observation of microscopic cracking, tendency for brittleness, cratering, or other microscopic film symptoms.
A special cutting tool (the cutting tip) that is integral to the gauge is used to incise a small precision V-groove through the paint film and into the substrate.
Micro-Metrics Company cutting tips are precision-ground by hand from tungsten-carbide blanks in a multiple-step process that includes a final inspection by microscope for accuracy of angle, fineness of finish, and lack of chips and damage.
The incised V-groove is observed vertically through an illuminated microscope bearing a measuring reticle (scale). The OG204 is equipped with a universal scope with a reticle that accommodates measurement in mils, microns, and millimeters.
The Tooke Gauge has been used to assess sandblast cleaning work, to measure plating and paint thickness on ceramics, metal, wood, and concrete, and even to measure protective backing thickness on mirrors. It is virtually the only tool for measuring paint on plastics. The quality of the incision in the film discloses much about the characteristics of the brittleness and adhesion of the material.
The injection-molded high-impact polycarbonate plastic Tooke Gage comes ready for use in a polycarbonate plastic carry case with two spare batteries, a spare LED bulb, a marking pen, a hex wrench, and a technical data sheet
The injection-molded high-impact polycarbonate plastic Tooke Gage comes ready for use in a polycarbonate plastic carry case with two spare batteries, a spare LED bulb, a marking pen, a hex wrench, and a technical data sheet
Overall dimensions
4.5" x 3.5" x1", 11.4 cm x 8.9 cm x 2.5 cm
Microscope
50-power, 45-degree, illuminated
Power
Two 15V AA drycells
Lamp
Penlight bulb, #222GE
Cutting tips
Tungsten-carbide
Shipping Weight
1-1/2 pounds
Product Features
A special cutting tool (the cutting tip) that is integral to the gauge is used to incise a small precision V-groove through the paint film and into the substrate.
Micro-Metrics Company cutting tips are precision-ground by hand from tungsten-carbide blanks in a multiple-step process that includes a final inspection by microscope for accuracy of angle, fineness of finish, and lack of chips and damage.
The incised V-groove is observed vertically through an illuminated microscope bearing a measuring reticle (scale). The OG204 is equipped with a universal scope with a reticle that accommodates measurement in mils, microns, and millimeters.
The Tooke Gauge has been used to assess sandblast cleaning work, to measure plating and paint thickness on ceramics, metal, wood, and concrete, and even to measure protective backing thickness on mirrors. It is virtually the only tool for measuring paint on plastics. The quality of the incision in the film discloses much about the characteristics of the brittleness and adhesion of the material.
