Standard Pack = 1 piece(s). Type = Digimatic Indicator ; Stem Diameter = 3/8 Inch, #4-48 UNF Thread ; Range = 0 - 1 Inch ; Back Type = Flat ; Measuring Force = 2.3 Or Less ; Range 0 - 25.4 MM ; Resolution = 0.00005/0.0001/0.0005/0.001 Inch ; Accuracy = 0.00024 Inch ; Power Supply = 9 V DC ;