INSIZE Dial Indicator & Mag Base Tool Set Set Includes... Dial Indicator # 2307-1 Magnetic Stand # 6201-60 Fitted Case Dial Indicator Specification include... Range 0-1" Range, 0.001" Graduation 2.36" Diameter Bezel 3/8" Stem Diameter Lug Back 0-100 Face Readings 4-48 Threads Mag Base features include... Main Stem: 0.470" x 6.930" Assistant stem: 3.940" x 6.300" Clamp hole: 3/8" diameter plus 8mm sleeve Base: 2.4" x 2" x 2.2" with on/off switch 132 lbf Magnetic Force