1.Material is staninless steel, and all measuring plane is quenching, grinding

2.Accurate laser scribed graduation guarantees more accurate measuring

3.Thumb roll and knurled locking screw makes measurement and reading more convenient

4.With a fine-adjustment carriage to fine-feed the slider for heavy duty series

5.With depth bridge

6.Measurement both for ID, OD, depth, and steps.

Measuring Range: 0-100mm,0-150mm,0-200mm,0-300mm

Accuracy: +/-0.02mm

Resolution: 0.02 mm