Features Made of high quality stainless steel, the gauge is sturdy and durable. The gauge is clearly marked for convenient and easy reading. The thread pitch gauge is great used to measure the pitch of a screw thread. There are two gauges in one set, including imperial55° and metric60°. Small size and light weight, you can conveniently keep it in your pocket or tool bag. Specification: Material: Stainless steel Measuring Range:Imperial55°(20 leaves): 4G, 4-1/2G, 5G, 6G, 7G, 8G, 9G, 10G, 11G, 12G, 14G, 16G, 18G, 19G, 20G, 22G, 24G, 28G, 40G, 48G.Metric60°(20 leaves): 0.5, 0.6, 0.7, 0.75, 0.8, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0.Weight: 40g/1.4oz(approx.) Package list: 2 * Thread Pitch Gauges Package List