7X Optical Comparator Set The 7 power magnification provided by a triple element, Kleiner type lens system, in a focusing mount, gives sharp, aberration free, undistorted images
Comes with five 1 replaceable scales, numbers R1, R5, R6, R8 and R12
The scales are photo-etched into a glass reticle and places in virtual contact with the object being measured, giving simultaneous enlarged images of the scale and the object, insuring accuracy
