SPI Electronic Blade Micrometer Features include... 1-2" / 25-50mm Measuring Range 0.00005" / 0.001mm Resolution Ratchet Thimble Non-Rotating Spindle Inc. / ABS / inch / Metric Measuring Spindle Lock Certificate of Calibration included Blade Dimensions are as follows... 0.032" Thick 0.255" Wide 0.236" Tall
