- The Reversible plug gage has the advantage that it can be reversed and used at the opposite end
when one end becomes worn and goes out of tolerance.
- The gaging members are simple pins that can be removed from the handle by loosening the collet
nuts at the ends.
- Each end of the handle is color coded, green for Go and red for Nogo.
- The Taperlock gage is named because of the tapered shank, which locks into the tapered hole
in the end of the handle.
- As a further aid in identification, the Go and Nogo members have a different length of gaging
surface. It is permissible to make the Nogo gage shorter because it is not supposed to enter the part.
- The Trilock design has been found best suited for gages between 1 ½ and 8 inches in diameter.
- The Trilock feature is the source for the name of this design. The handle has three prongs on the
ends, which fit into three grooves equally spaced around the central hole of the gage members.
- A bolt holds the member to the handle and the Trilock grooves and prongs stabilize the member.
- Like the pin (reversible) type, Trilocks are reversible, since either face can be locked to the
handle.
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