Made of quality steel, hardened and precision ground on all 4 sides.
Sold individually.
No need to buy matched pairs. These parallels can be purchased and used individually or can be matched with any number of other individual parallels at any time.
Different sizes can be used together. For example, a 6″ x 1/2″ x 1″ parallel can be used with one 8″ x 3/4″ x 1″.
Held to size +/- 0.00025″ on four sides.
Adjacent sides per square inch within 0.0005″.
The 77-380-4 has opposite sides parallel within 0.0001″ per 6″.
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