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<http://schema.org/text>
"The minor diameter on a Go gage is used to gauge the depth the thread is cut, to ensure there will be clearance for the minor diameter of the mating part. The Nogo minor diameter is truncated to ensure it does not interfere with anything."
<https://willrich.com/shop/cmm-sensors-probes-styli/zeiss-2/datum-products-for-zeiss/>