Dial Indicator, Continuous Reading, AGD 2 AGD No., Dial Size 2.250 In., Range 0 to 0.250 In., Graduations 0.0010 In., Dial Reading 0-100, Range per Revolution 0.100 In., Long Form Calibration Certificate No, Dial Color White, Bearing Type Jeweled, Back Type Lug, Contact Point Dia. 1/4 In., Contact Point Style Ball, Bezel Lock Yes, Features Rugged and simple unit construction with a In.universally fitting In. design, Sharp bezel serrations for positive grip