• 4"-20"/100-500mm capacity (internal measurements) • Inch/metric/fraction conversion • 4" drum preset (101.60mm) • Floating zero sets zero anywhere • Hold function • Resolution: 0.0005"/.01mm/fractions in 1/64th" increments • Accuracy: 0.005"/.13mm • Dust, water and oil resistant to IP54 standards • RS232 output for direct computer connection • Beam has vernier scale to double check reading • Conversion chart on back of main carriage • Includes 4" setting master • Steel conical contact points • Carriage lock screw • Includes fitted case