Vernier height gauge


Vernier height gauge

A vernier height gauge is a height gauge with the additional refinement of a vernier scale for greater accuracy in reading or setting the tool.

The first image shows two height gauges, the left height gauge has the vernier scale, the right one has a digital readout making it an electronic height gauge.

These measuring tools are used in metalworking or metrology to either set or measure vertical distances; the pointer is sharpened to allow it to act as a scriber and assist in marking out work pieces.

They may also be used to measure the height of an object by using the underside of the scriber as the datum. The datum may be permanently fixed or the height gauge may have provision to adjust the scale, this is done by sliding the scale vertically along the body of the height gauge by turning a fine feed screw at the top of the gauge; then with the scriber set to the same level as the base, the scale can be matched to it. This adjustment allows different scribers or probes to be used, as well as adjusting for any errors in a damaged or resharpened probe.


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