Altana Hoffman Scratch Hardness Tester Operating Instruct User Manual download pdf (Page 4)

General Information

The Hoffman Scratch Tester consists of a four-

wheeled carriage, a balanced beam with a

scale of 0-20 arbitrary units and a scratching

tool with a sharp circular rim mounted at 45

the test surface. a counterweight, allen wrench

and movable weights (riders) both large (100 g)

and small (25 g) are also included. The overall

dimensions of this instrument are 11“ x 1

“ x l „.

General Information

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Altana Hoffman Scratch Hardness Tester Operating Instruct User Manual Page 4