Features: Dial indicators are precision measuring tools with a myriad of applications in the machine shop. Contact point made from stainless steel. Hard chrome-plated stem, precision ground & lapped. Shock proof construction. Simple structure, convenient use & maintenance. High sensitivity, stable & reliable in accuracy. Used to measure shaft runout, shaft thrust, gear backlash, flywheel face runout, flywheel housing concentricity, & valve seat concentricity.