Honeywell linear/rotary potentiometers are designed to measure linear/rotary position and displacement. Reliable potentiometric technology was initially created for military applications and recently has become the norm in industrial markets.
The proprietary MystR® conductive plastic has unlimited resolution, absolute position measurements when the unit is turned on and a wide temperature range. There is no requirement for intermediate signal conditioning for normal ratiometric position sensing. 5mm (0.2") stroke units must endure exposure to harsh chemicals.
It is best used in applications that require sensing response to the movement/location of a target, such as a pulley shaft or molding press slide.