52 PCS Metric 60 Degrees +British 55 Degrees CR Stainless Steel Thread Gauge, 52 PCS Thread Gauge

1. The scale on the surface of the ruler is clear, clear and easy to use.
2. Plating shell, anti-rust, beautiful and generous.
3. CR stainless steel forging, high strength.
4. Notch design, easy rotation.
5. Purpose: for monitoring screw pitch of thread, one piece of screw pitch.