Precision Plunger Dial Indicators are suitable for various applications in the workshop or inspection department. All units are supplied with 8 mm stems, M2.5 threads and offset lug backs. Special Features: Extended Life from proven designs, with jewelled bearings on small movements and high resolution/long travel. Accuracy - Resolution down to 0.001 mm. Dual marking for flexibility on the six high resolution models allows use for continuous read or balanced reading applications. Calibration certificate supplied with all units reading better than 0.1mm.