M3 cylinder stylus with 3.0 mm diameter x 4.0 mm long stainless steel cylinder and stainless steel stem and base. Overall length is 13.0 mm. Stylus weight is 0.70 gram. Compare to Zeiss 602030-8099-000. Cylinder styli are used for edge probing, like those found on stampings or sheet metal parts. They are not recommended for high accuracy work because their form is less precise than a sphere. Please contact us with any questions about calibrating or using cylinder styli.