Fraction / Inch / Millimeter Chart Interval Settings Start: in End: in Step (Fraction Denominator): 1/2 (0.5) 1/4 (0.25) 1/8 (0.125) 1/16 (0.0625) 1/32 (0.03125) 1/64 (0.015625) 1/128 (0.0078125) = 0.015625 in Step (Millimeters): 0.01 mm 0.05 mm 0.1 mm 0.5 mm 1 mm 2 mm 5 mm 10 mm