0‑40‑0 0.01mm Precision Metric Dovetail Rails Dial Test Indicator with 2 Ruby Probes Features: Accurate and convenient measurement of narrow or concave objects. 0-0.8mm measuring range, 0.01mm graduations, 0-40-0 balanced inch. The measuring probe can be 180° rotation, free to adjust the measurement direction. Dovetail mount for mounting the indicator from the top, rear, or front. Rotate the knurled bezel 360 degrees to make the reading zero at any position. Widely used in mechanical oscillation measurement, workpiece measurement and plane correction.   Specification: Probe Contact Material: Ruby, Tungsten Steel (Optional) Measuring Range: 0-0.8mm Graduations: 0.01mm Mounting Type: Dovetail Dovetail Clamp: 3/8" and 5/32" Package Weight: Approx. 110g/3.9oz   Package list: 1 x Dial Test Indicator 2 x Measuring Probes 2 x Dovetail Clamp 1 x Molded Case