【What You Get】: 1 x American SAE type pitch gauge 60°, and British Whitworth metric system pitch gauge 55° The stainless steel construction is top-notch, with 0.4cm thick blades that won't rust on you and give you accurate measurements every time Thread Pitch Gauges Measure Tool Set,Stainless Steel Thread Gauges, Metric & Imperial Screw Gauge SAE Whitworth 55 Degree & Metrisch 60 Degree Thread Pitch Gauge for Industrial Measurement Metric Imperial US Screw Thread Pitch Gauge 55 60 Degree Whitworth Thread Gauge Metric And Imperial 4PCS Metric & Imperial & US Screw Gauge SAE Whitworth 55 Degree & Metric 60 Degree & & US 60 Degree Thread Pitch Gauge For Industrial Measurement Metric Imperial Thread Gauge good resilience, elegant appearance. Thread Gauge Metric Imperial Screw Pitch Industrial | Ubuy India Surface polished smooth, applying anti-rust oil to prevent rust. 【Clear Marking】 : There is a small hole at both ends, which is convenient for adjustment and disassembly with screws.