ADHESION AND SCRATCH RESISTANCE TESTER
Model 435 S

The scaring tool in the form of a disc, with locking facility, made of special plastic or metal, is mounted
on a screw and is under pressure from a helical spring. This applies to a force which is adjustable
from 0 to 20 N. The instrument is placed onto the surface so that it rests on the two guide wheels and
the marking wheel which is locked in position then presses onto the surface with the pre-set force from
the spring. The range of spring forces available is divided into three sections, each covered by one of
three exchangeable springs.

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