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QUIX Precision 1-2-3 Steel Blocks | Versatile 23 Holes | Precision Ground & Case Hardened | Heat Treated to HRC 55-60 | Ideal for Professional Inspection, Calibration & Setup Work: Veritas Set
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2pcs/set 25-50-75mm Hardened Steel Blocks 0.005" Precision Matched Machinist 123 Milling Tool 23 Holes 1-2-3" block gauge - AliExpress
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SPI - Setup Block: 0.0003 Squareness, Hardened Steel, 2-3-4 Block - 86217098 - MSC Industrial Supply
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Steel Precision Blocks | 1 2 3 Block Precision | 123 Blocks Precision | Tools Machinist - Gauges - Aliexpress
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Timunr 1 Pair of Matched No Holes 1 x 2 x 3 Precision Parallel Blocks, 0.0001 Inch Alloy Steel 123 Parallel Block Set: Amazon.com: Industrial & Scientific
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