AccusizeTools - 0.03'' x 0.0005'' Dial Test Indicator in Fitted Box, P900-S108 Range x Graduation: 0.03&#034; x 0.0005&#039;&#039; Dovetails on top and back for all-around positioning Includes two dovetail clamps (3/8&#039;&#039; &amp; 5/32&#039;&#039;) Fully Jeweled movement Contact Point adjustable 230 Deg