Device for examination of surface quality of planar samples for investigations on scratch resistance of samples, has test weights designed in mechanically-movable manner to increase load exerted on sample by testing switch

摘要

The device has a desk comprising a clamping device (5) i.e. spring force clamping lever, for releasably fixing respective samples (24) on the desk and a stop unit (22) for keeping the sample in a defined position. A testing switch is secured at a pivotal arm (12) whose lever end is formed in a weight-loaded manner. Test weights (8) are arranged on a support carriage (11) and designed in a mechanically-movable manner to increase load exerted on the sample by the switch while the sample is moved with respect to the switch by a drive unit.