The Starrett 80 Series Miniature Dial Indicator is similar in design to AGD dial indicators. It is furnished with a balanced dial, jeweled bearings, and a lug-on-center back. It has an unbreakable crystal, hardened stainless steel bottom stems can be held in fixtures without cramping rack action, stem, rack, spindle, gears, pinions, and direct-acting compression spring eliminates side friction.