A height gauge is a precision measuring instrument used mainly on granite surface plates (surface plates) to measure the height of components or to scribe lines at a specific height with high accuracy. It is the "vertical" version of the caliper, offering much greater stability.
Scribing Function: A hard tip (usually carbide) is fitted to the moving part of the instrument, allowing the technician to "write" (scribe) on metal with accuracy to a hundredth of a millimeter.
Types:Vernier (Analog): Classic instruments with a scale, extremely durable with no need for batteries.With Dial: They make it easier to read fractions of a millimeter via an integrated dial.Digital: They offer direct reading, the ability to zero at any point (Zero function) and often built-in memory for comparative measurements.
Combination with Dial Indicator: Often, instead of the scribing tip, a dial indicator is mounted on the height gauge to check the flatness or parallelism of a surface relative to the base.