Shaped product measurement

摘要: There is disclosed a non-destructive dimension measuring and comparing system wherein coherent light beam impinged on workpiece surface, the back scattered radiation directed onto vidicon to produce pair of backscatter images representative geometry or spacing in relation reference. The particularly adapted measure surface profiles extruded shapes passing over reference such as roll. Electronic circuitry for processing image signals includes noise rejection means permitting effective interpretation only slightly more intense than ambient level. A mechanical arrangement provided by which source, vidicon, etc., are positioned scanned allow extremely accurate measurement small profile dimensions.