•The Trilock design has been found best suited for gages between 1½ 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.
•Available in Steel, Carbide and Chrome.
•Gaging surfaces are hardened to Rc 58-62.