Gages have both "GO" and "NO-GO" ends
Bill Jarrell

Brennan’s new Gap Inspection Gages are designed to assure that an instrumentation tube fitting has been sufficiently pulled up. These gages are particularly useful when fittings are to be tightened in difficult or inaccessible locations as well as in systems where insufficient make-up could cause potentially dangerous or expensive consequences.

Not intended for use in subsequent remake assemblies, Brennan’s gages have both “Go” and “No Go” ends and should be used only in initial make-up situations.

This new NGG series’ carbon steel gages are available from stock in 5/8” through 2’’ sizes.