ANNESEY 2pcs M25-M27 Thread Ring Gauge Accuracy 6g Measure Tool M25M2 M27 X1.5 0.5 0.75 3 2 1(M25X1.0-6g T Z)

1. Ring gauge, also called calibration ring gauge, is a kind of ring with specific dimensions and properties used to correct the deficiency of the gauge. 2. It can't check the parts machined on the positive center and the crankshaft, etc., so its application range is limited to a certain extent. 3. Ring gauges are usually used in manufacturing processes, such as machining and assembly, to ensure that the dimensions of products meet the requirements. 4. Ring gauges are also commonly used in inspection situations, such as measuring the dimensions of round products such as bearings, bores, pipes, and even the thickness of walls and the size of bottom gaskets. 5. They are reusable, easy to use and durable.