15-817-0 SPI Dial Hardness TesterSPI Dial Hardness Tester This high quality precision instrument uses the Rockwell A, B and C scales for measuring hardness. Features include Minimum Hardness: 20 RH Maximum Hardness: 100 RH Standards: EN ISO 6508 and ASTM E18 Resolution: 0. 50 of a Rockwell unit Rockwell scales: A, B, C, F Testing Space Vertical 6. 7" 170 mm Horizontal 6. 5" 165 mm (from centerline) High quality precision instrument for measuring hardness with ease of operation;
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