METRIC SIZE CONVENTIONAL JIS STANDARD
Please use the thread limit gauges corresponding to various screws such as meter screw, bicycle screw, unifi ed screw,sewing machine screw, etc.The limit gauges are divided into ISO-based JIS and conventional JIS (for inspection and production use).According to JIS, outside diameter of the male screws are basically measured using plain ring gauge or snap gauge and inside diameter of female screws are measured using plain plug gauge.By using such the gauges, the complex element of the screw can be inspected easily and quickly.Therefore, such the gauges are effective to control the quality of the workpieces in mass-production line.
