• Operation Type: Mechanical
• Minimum Measurement (Decimal Inch): 3
• Maximum Measurement (Decimal Inch): 4
• Graduation (Decimal Inch): 0.001
• For measuring various screw threads • Grey painted steel frame • Non-rotating spindle • Ratchet Stop for digital models, Friction Thimble for mechanical models • With S-Wrench, Micrometer Standard, Warranty Card, Instruction Manual, Calibration Certificate