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HM-65 K-Slump Tester used in fresh concrete testing determines approximate concrete slump and workability readings in just 60 seconds. The 12x0.75in (305x19mm) LxDia. hollow-tube probe has two groupings of side openings through which wet concrete enters to raise the floating plunger and get an estimate of concrete slump. Workability is indicated by comparing readings on the measuring rod. Readings are reliable when 6in (152mm) or more of concrete surrounds the tester. Instructions and correlation chart included.
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