For digital shore durometers (code ISH-DSA and ISH-DSD)
Can perform repeatable hardness measurement due to fewer possibilities of human error or measurement variations
Special structure for stable loading
Weight block A is for ISH-DSA, weight block D is for ISH-DSD

Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty 
