Vermont Gage Steel Go Plug Gage, Black Oxide, Tolerance Class ZZ, 0.004" Gage Diameter
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<b>[Product Information]</b><br>
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<li>Supplied with a certificate of accuracy traceable to National Institute of Standards and Technology (NIST)</li>
<li>Go (+) gage for measuring the lower limit of a hole</li>
<li>Made from tool steel 60/64 Rockwell c scale (Rc) cold stabilized for durability</li>
<li>Class ZZ (tolerance of .0002”) for longer wear</li>
<li>Black guard finish to inhibit corrosion and for indicating wear</li>
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