Patent ID: 6499345
Filing Date: 2002-12-31
Classification: B65H

Abstract:
A measuring device for thread-type test samples, comprising a measuring slit (2) with at least one measuring zone (6, 7) for measuring the characteristics of a moving test piece, said measuring slit (2) having spaced apart wall portions providing therebetween a space through which the test piece may be drawn with surfaces of said wall portions facing the path of the test piece, said wall portions having measuring sensor components associated therewith in said at least one measuring zone for establishing a measuring field that extends between said wall portions and intersects the path of the test piece, and a coating (8) covering surfaces of said components and wall portions which face the path of the test piece through the measuring slit, said coating being a coating of an abrasion-resistant material which is insensitive to wear by the moving test piece and does not interfere with said measuring field.