The Moore & Wright 420 Series Dial Test Indicators have highly precisioned, fully jewelled bearings and carbide points. There are two dovetail clamps on these models. The 420 Series allow automatic reversal of measuring direction and there is a rotating dial for increased ease of use. Styli Length: 12mm (1/2in).Select Option 0.030in/0.0005in0.8mm/0.01mm Add to Basket Quantity