Super high precision professional tool large display and high precision for mechanical applications. Lug back or flat back and 3/8" stem will allow installation of this indicator on any magnetic base. Features: includes 4 probes: Carbide ball, large flat, small flat, point. 2 reading functions: inch and metric extra large LCD display ABS: absolute & incremental reading flat back or Lug back option included protective case included range 0-1" resolution: .0005"/.01mm/1/128 inch accuracy: +/- 0.001" extra battery included.