Uses the X pattern of abrasion produced by a rotary action of abrasive wheels. Supplied with a full range of auxiliary weights, specimen holders, abrasive wheels and vacuum unit, fitted with membrane keypad including a predetermined electronic counter.
 

		Also available in a dual head model features two sample turntables, allowing two tests simultaneously (test two different or identical specimens for comparison or contrast). Separate function keys operate the turntables independent of each other.