1-inch Gauge Block with AS-1 Grade Inspection Certificate, Steel Rectangle, 1"1 Inch Gauge Block, AS 1 Grade with Inspection Certificate +10 in deviation from nominal length Steel construction for long lasting durability Nominal size is printed on the front, identification number printed on top Rectangular base (Overall dimensions: 1" x 0. 35" x 1. 37") Ideal for calibrating measuring equipment such as micrometers, sine bars, calipers, and dial indicators.
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