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HR-45A Manual Superficial Rockwell Hardness Tester
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HR-150A Rockwell hardness tester
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HR-150B High Stroke Rockwell metal hardness tester
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HRS-150 Superficial Rockwell Hardness Tester
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HRS-150B Digital Display Rockwell metal hardness tester
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HRD-150 Electric Rockwell hardness meter
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HRD-150B Motor Driven High Stroke Rockwell Hardness Tester
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XHR-150 Manual Plastics Rockwell Hardness Tester