Standard Pack = 1 piece(s). Type = XT-Series Holemike Vernier Bore Gage ; Range = 0.375 - 0.500 Inch ; Graduation = 0.00025 Inch ; Accuracy = 0.00015 Inch ; Measuring Depth = 2.28 Inch ; Ring Included = 0.5 Inch ; measuring Anvils Above = 0.5 Inch ; Blind Bore Measuring Above = 0.5 Inch ; Features = Ratchet Stop For Consistent Measuring, Non-Removable Anvils, Extensions Available For Deep Measuring, Setting Rings Included In All Sets, Includes Ukas Certificates For All Holemikes And Setting Rings, Every Gage Is Individually Serialized ;