Thread gauge is used to check whether the thread size is in accordance with the specified gauge. The tooth gauge is generally used in production, and the tooth gauge can be matched with the tooth profile to confirm the pitch of unknown thread. Features: 1. Made of high quality carbon steel material, anti-rust, anti-corrosion, high hardness, durable to use. 2. Thread gauge is clearly marked for convenient and easy reading. 3. The thread pitch gauge is great used to measure the pitch of a screw thread. 4. Small size and light weight, you can conveniently keep the in your pocket or tool bag. 5. Accurate measurement, simple and generous shape, wide application range. Specification: Condition: New Item Name: Thread Gauge Material: Carbon Steel Thread Gauge Type: 29 Degree T-thread Gauge, 30 Degree T-thread Gauge (optional) 29 degree T-thread Gauge: The number of teeth containing 16 pieces (1-12 teeth) : 1, 1-1/3, 1-1/2, 1-3/4, 2, 2-1/2, 3, 3-1/2, 4, 5, 6, 7, 8, 9, 10, 12mm 30 degree T-thread Gauge: Contains 14 pieces (2-20mm) pitch in order: 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20mm Package List: 1 x Thread Gauge Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.