Descriptions:The bore gauges are used to measure internal sizes of work pieces by comparative method.These series bore gauges are equipped with a good guiding protective bridge which can be self-centering exactly and reliably, and measuring range is 50-160mmFeatures:The bore gauges are used to measure internal sizes of work pieces by comparative method.These series bore gauges are equipped with a good guiding protective bridge which can be self-centering exactly and reliably.The moveable anvil on one side and an interchangeable on another side , which serves for setting the bore diameters.This dial bore gauge 's measuring range is 50-160mmEasy to measure, and with high accuracy, which is 0.01.Specifications:Material: MetalType: inner diameter scaleMeasure range:50-160mmAccuracy: 0.01Weight:1211gPackage Include:1 x Gauge Rod1 x Gauge Head5 x Measuring Rod1 x Screw Washer1 x Plastic Box.