Dial Test indicator

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Dial Test indicator

A lever dial measuring device is a special length measuring device similar to a dial gauge , but with an angularly movable measuring probe for measuring small differences in length. Because of the design, it is particularly suitable for concentricity testing for example on the lathe , as not like the dial gauge or the dial indicator can tilt the plunger. The flat design can continue measuring in confined spaces, as they are often the upgrading of machine tools appear to be.

Lever gauges always measure in two directions. With analog devices, measured values ​​can easily be read off using the opposite graduated scale . In order to obtain the correct measured value directly, the lever must be parallel to the measuring surface. If the angle is too large, the measured value can be corrected mathematically. The measuring range is usually between 0.01 and 0.5 mm, while the measuring deviations correspond to those of the dial gauge. The measuring surface on the probe lever is often made of low-wear materials such as hard metal or ruby .

Norms and standards

  • DIN 2270-88 lever dial gauges

literature