Magnifier Measuring Scale, Measurement Type Protractor, Radius 1/16 in to 3/8 in, Graduations 1 Degrees , 0.0050 in, 0.10 mm, Range 3/4 in, Line Width 0.001 in, 0.002 in, 0.003 in, For Use With Mfr. No. 81-34-35