M3 Therm-X stylus with 1.5 mm diameter ruby cylinder and 5.0 mm diameter x 9.0 mm long titanium base. Overall stylus length is 16.0 mm. Stylus weight is 0.58 gram. Compare to Zeiss 626113-0151-016.
Cylinder styli are used for probing thin edges, like those found on stampings and sheet metal. They are not suitable for high accuracy work because the form of a cylinder is not as precise as a sphere. Please contact Q-Mark with any questions about calibrating or using cylinder styli.