Volkel Go No-Go Plug Gauge Set The Volkel Go No-Go plug gauge set consists of seven pieces of thread gauges in a sturdy plastic case. It is a combination of GO and NO-GO plug gauges. The scrap side of this thread plug gauge is marked with a red ring. It is calibrated at a measurement laboratory using IAC thread scanners. This is made of high-quality raw material. It is used as an inspection tool. Features and Benefits • Metric measurement system
• High durability and reliability
• Thread size M10, M12, M3, M4, M5, M6, M8
• Compact in size and rugged
• Easy to use
• Accurate
• Double ended gauge Certifications • ISO1502
• DIN13