Gaco Go/No-Go plug gauge with a Go size of.217 and a No-Go size of.219. This two-ended gauge is used to verify bore tolerances by comparing hole diameters to the Go and No-Go limits. The Go end (.217) should fit into a bore at least this size, while the No-Go end (.219) should not fit into a correctly sized hole, helping identify undersized or oversized bores. Built for precision inspection in machining and quality control, this gauge provides a simple, repeatable check for hole size conformance.
