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 50-160mm Features: 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 50-160mm Easy to measure, and with high accuracy, which is 0.01. Specifications: Material: Metal Type: inner diameter scale Measure range:50-160mm Accuracy: 0.01 Weight:1211g Package Include: 1 x Gauge Rod 1 x Gauge Head 5 x Measuring Rod 1 x Screw Washer 1 x Plastic Box