Dial Drop .001-.25INB2, Range 0 to 0.25 in, Accuracy +/-0.0010 in, Long Form Calibration Certificate No, Back Type Flat Non-Removable Back Lug, Dial Reading 0-50-0, Dial Size 40 mm, Dimension Type Inch, Included Certification Certificate of Inspection, Maximum Measurement - Inch 0.25 in, Maximum Measurement - mm Not Applicable, Minimum Measurement - Inch 0.001 in, Minimum Measurement - mm Not Applicable, Range per Revolution 0.1 in, Reading Balanced; Continuous, Bearing Type Plain