This is the SM25-1 scanning module kit #A-2237-1111.
The SP25M comprises two sensors in a single housing. Users can switch between a choice of five scanning modules (which can carry M3 styli with lengths from 20 mm to 400 mm) and an adaptor module that is compatible with Renishaw’s TP20 range of probe modules. This capability enables scanning and touch-trigger probing in a single probe system.
The SP25M’s compact size and autojoint mounting makes it compatible with the PH10M PLUS / PH10MQ PLUS and PH6M probe heads. It can also be mounted on a multiwired extension bar. Together, these combinations permit excellent reach and access to part features.