Metric Dial Test Indicator. Easy to read with permanant black and red figures against a white background. Measures between 0-10mm in 0.01 graduations. The bezel rotates with the scale for perfectly aligning the needle to zero. Locking screw firmly holds bezel in position. The rear of the indicator has a 6.3mm diameter hole for attaching to a magnetic base (not supplied). Bezel diameter 57mm Max stylus travel 12mm