Edmund 6X Junior Comparator

Extremely portable comparator is only 1-3/4" high x 1" O.D. Its glass reticle is superior to film reticles in many other pocket comparators which can bend, warp or become damaged due to oils or solvents. Optical lens system is distortion-free right to the edge of the field. Cell of transparent Lucite admits plenty of light to reticle and work. Accepts all 21mm reticles.

A special feature of the reticle is the tickness comparison scale (E). A series of parallel lines 0.002" to 0.007" apart enable visual and direct measurement of the thickness of materials. Mechanical measurements of such items are sometimes inaccurate, because materials often compress. Linear scales are provided in bot millimeters (B) and decimal inches (C). The 10mm long metric scale is divided into units of 0.2mm. The 0.5" decimal inch scale is marked in units of 0.005". Scales to compare hole diameters read in fractions from 1/64" to 1/16" (A) and in decimals from 0.005" to 0.050"(D). Both the reticle and the object to be measured are magnified 6 times.