The Starrett 155 Screw Pitch Gage includes a substantial steel case with a number of folding leaves at both ends. This product includes 27 leaves, 2-1/4-28 TPI range with locking device and a 60 deg center gage.

Starrett® Screw Pitch Gage, Series: 155, 2-1/4 to 28 TPI Measuring, 27 Leaves, 60 deg Thread, Steel, 3-35/64 in L Dimensions

• Most useful tool in any mechanic's tool box
• Quickly determines the pitch of a various threads
• Features a locking device at both ends of the case so leaves can be securely locked in position for use
• Leaves have a special narrow design in, permitting checking internal threads in nuts as well as external threads

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