The TP20 is a compact module changing touch-trigger probe. The two-piece design, comprising of a probe body and detachable stylus module(s), allows the use of a range of stylus configurations and extensions to access features on complex parts. Modules can be changed manually or automatically without the need for requalification of the stylus tip. The standard force probe module is identified by a black cap. This probe module is suited to the majority of applications requiring extensions up to 50 mm long. The recommended stylus limits for the standard force probe module are:•Straight styli up to 50 mm long •Star and cranked styli up to 20 mm offset The 6-way probe module is identified by a blue cap. This probe module is designed for 6-way operation where there is a requirement to measure in the –Z direction, for example when measuring undercuts. The recommended stylus limits for the 6-way probe module are:•Any stylus type up to 30 mm long •Star and cranked styli up to 10 mm offset