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 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628
3M 27314, Ultra Durable 5 inch Power Sanding Discs, Universal Hole, 80 grit, 7100187643, 10 per pack 