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High Precision: +/- 20 Seconds, 0.0001" per inch
Set contains two angle blocks: one 30°-60°-90° degree block and one 45°-45°-90° degree block
Precision Ground Solid Hardened Steel
Thickness 0.25"
Professional Grade Precision Tool Angle blocks are a valuable tool for the alignment and measurement of precise angles. They can also be stacked to create other angles. Precision-ground, steel construction. Features: Set contains two angle blocks, one 30°-60°-90° degree block and one 45°-45°-90° degree block Accuracy +/-20 seconds, 0.0001" per inch. Hardened steel Rockwell HRC 55 3" long x 1/4" thick Includes padded fitted case