ALTANA Hoffman Scratch Hardness Tester Manual - Manual (Page 3)

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Description
This instrument consists of an applicator blade
The Hoffman Scratch Hardness Tester was
developed by the National Paint, Varnish and
Lacquer Association and has been produced by
BYK-Gardner for many years. This instrument
was designed to fill the need for a simple portable
device to rate scratch resistance and adhesion of
industrial product finishes on a comparative basis.
It is an ideal tool for laboratory or field use.
Description