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SPI Rectangle Steel Gage Block, 3 Inch, Grade AS-1, NIST Certified

SPI Steel Parallel, 6" Long x 1-5/8" High x 1/2" Thick, 0.0003" & 0.002" Parallelism, Matched Pair

SPI Gage Block Set, Steel, 0.05 to 1 inch Range, 36 Pieces, 0.000100 inch Tolerance, Round

SPI Steel Parallel, 6" Long x 3/4" High x 1/8" Thick, Matched Pair, Precision Machining Setup Tool

SPI Steel Parallel, 6" Long x 1-1/4" High x 1/2" Thick, 0.0003" & 0.002" Parallelism, Matched Pair

SPI Adjustable Parallel Set, 3/8 to 2-1/4 Inch Range, 5-1/16 Inch Long, 9/32 Inch Thick, 6 Pieces

SPI Steel Parallel, 6" Long x 1-1/2" High x 1/2" Thick, 0.0003" & 0.002" Parallelism, Matched Pair

Steel Thread Gauge Ruler Nut Thread Checker Screw Locators for M 3-18 Precise Measurement in Industrial Application Precise Calipers Measuring Tool