3M 20968, Portable Utility Cloth Roll Kit 314D, P60X, P80J, P120J, P180J, P240J, 1 in, 7000118641 
Insize ISM-PM20, PORTABLE MEASURING MICROSCOPE, 20X, 6928640371066
$336.75
Total magnification 20X. Eyepiece 10X with graduation.
Objective (achromatic) 2X (numerical aperture: 0.05).
Working distance .68″. Graduation.002″/ 0.05mm.
Viewing field .35″DIA. Focus range 1.18″DIA.
Illumination LED light. Diameter of base 2.48″DIA
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