Screw Pitch Gauges
Starrett® 156M Screw Pitch Gauge, 0.25 to 2.5 mm Measuring, 28 Leaves, Steel
The Starrett 156M Screw Pitch Gage includes locking device, 28 leaves, and 0.25-2.50mm range. 60 Deg Threads.
Starrett® 284 Acme Standard Screw Thread Gage, 1 to 10 TPI Measuring, Steel, Black Penetrate
The Starrett 284 Acme Standard Screw Thread Gage is a standard for grinding and setting tools when cutting Acme threads, which have the same depth as square threads but the sides of the threads are at an inclination of 14-1/2 Deg (29 Deg included angle). This form of thread is used extensively and has in many instances replaced the square thread in machine construction. The advantages of the Acme thread is its strength and the ease by which it can be cut compared with square threads.
Starrett® 6 Screw Pitch Gage With Locking Device, 4 to 42 TPI Measuring, 30 Leaves, Steel
The Starrett 6 Screw Pitch Gage includes a substantial steel case, a number of folding leaves at both end, and 30 leaves. This model features a 4-42 TPI range.
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