Starrett, 60594, Electronic Micrometer Heads; Minimum Measurement (mm): 0; Maximum Measurement (mm): 25; Thimble Dia (mm): 12.00; Spindle Dia (Decimal Inch): 0.2500; Spindle Length (Decimal Inch): 1.0000; Overall Length (mm): 150; Calibrated: No; Traceability Certification Included: No