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The HM-71 Gilson Concrete Test Hammer quickly provides reliable estimates of in-place concrete strengths, allowing rapid assessments of large areas and delineation of potential problem areas. This reasonably-priced alternative is made in America and meets the same published specifications as the original Schmidt Hammer. A durable nylon carrying case with loop handle, carborundum stone for surface preparation, charts, instructions, and a calibration certificate are included.
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