Plain Ring Gage

Plain ring gauges are a type of inspection gauge used in precision measurement and quality control processes. They are typically used to check the external dimensions and tolerances of cylindrical objects, such as shafts or pins.

Plain ring gauges consist of a cylindrical ring with a precisely machined internal diameter. The diameter of the ring is manufactured to a specific size and tolerance, which corresponds to the desired dimensions of the object being measured. The ring gauge is designed to be a "go/no-go" gauge, meaning that it can determine whether the measured object falls within acceptable tolerances.

To use a plain ring gauge, the object being measured is inserted into the ring. If the object fits snugly and does not pass through the ring, it is considered within tolerance and is deemed acceptable. If the object does not fit or passes through the ring, it is considered out of tolerance and is rejected.

Plain ring gauges are commonly used in industries such as manufacturing, automotive, aerospace, and engineering, where precise measurements and quality control are essential. They are an important tool for ensuring that manufactured parts meet the required specifications and standards.

In summary, plain ring gauges are inspection gauges used to measure the external dimensions and tolerances of cylindrical objects. They are a crucial tool in quality control and precision measurement processes.