Indian Tools is authorised dealers and distributors for Insize Go_nogo gauges in Pune, Maharashtra (India). A go/no-go gauge refers to an inspection tool used to check a workpiece against its allowed tolerances via a go/no-go test. Its name is derived from two tests: the check involves the workpiece having to pass one test (go) and fail the other (no-go). ISO 1502 sets a standard for threads and gauging to test them.