These indicators are best suited to long run inspections. Group 3 indicators are available in various models, with a variety of dial face graduations, in both english and metric.
Group 3 Dial Indicators benefits:
Graduation as fine as .00005"
Cartridge style movement - easily replaceable
Universal movement - can be used in ANSI/AGD group 2, 3 or 4 indicators
Friction free fully jeweled movement
Jam proof / shock proof
Revolution counters standard on all multi-revolution indicators