Electronic Crockmeter Rubbing Fastness Tester SDL Atlas is excited to introduce the next generation Electronic Crockmeter Colorfastness Rubbing Tester. Motorized for frequent use and long run tests and fitted with an electronic counter for up to 9,999 strokes. Comes with a standard weight (9 N) arm that complies to a variety of standards including AATCC 8 and 165 and traditional sample holder. New to this design is an option for a lightweight arm for easily adding weights to perform a wider range of tests. Weight