Improved Diemakers Square with Angular Adjustment by Starrett
No. 457 Series (10°-0°-10°)
The Starrett No. 457 Improved Diemakers’ Square is a highly useful tool for tool and diemakers, especially for measuring die clearances. It is also very handy for patternmakers to check angles and drafts on patterns.
The beam of this square is graduated to show the setting in degrees of the blades. Blades can be set for any angle up to 10°, either side of 0° and the angle is indicated by the line on the pointer.
The graduated blade has 32nds of an inch on one side, and 64ths on the other. It is 5/32" (4mm) wide over a length of approximately 1-5/8" (41mm) and cut away at one end to a width of 3/32" (2.4mm).
The offset blade, which is used where it would be impossible to insert the straight blade, protrudes from the square about 1-1/2" (38mm). It is 1/8" (3mm) wide and both sides of each edge are beveled to give visual line contact.
The beam is beveled adjacent to the blade so that the blade is readily visible when checking in holes, slots, etc. Blades and beams are hardened and ground. |
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No. 457C complete, with straight and offset blades.
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| No. 457 Diemakers’ Square is used to determine amount of clearance in this die. Movable pointer registers clearance in degrees. |
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Starrett Tool Index 
