Manufactured in accordance with AFS specifications, our Mould Hardness Tester is used to determine the surface hardness of green sand mold. The Hardness test can be performed within seconds; the user simply presses the tester against the mold surface and notes the reading on the dial. Excessive pressure will not alter the reading and it operates in any position.Details:A 1/2 in. (12.7 mm) radius ball contact point is loaded with a spring pressure of 980 g. The softer the mold surface, the greater the penetration into the mold.A mold offering no resistance to the contact point would have a zero reading and one having hardness capable of preventing penetration would read 100.A maximum reading stop holds the reading when testing in blind portions of the mold

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