Accurately measure holes, slots, grooves and recesses. Split ball contact regulated by turning knob at end of handle. Measurements obtained by measuring over ball contact with micrometer. Contacts hardened for long life.
This product may contain metals and/or chemicals that are included in the State of California's latest Prop 65 warnings. Exposure may cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov