Specification: Product name: Metric Screw thread gauge Size: approx. 6.7 x 1.7 x 1.3cm Color: as picture shows Material: steel Using rotary switch, can be freely adjusted Quenching processing, strong hardness, head with a magnetic Function: measuring thread and external thread tooth pitch Measuring range: (55 degrees) -4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 19, 20, 22, 24, 28, 40, 48 Measuring range: (60 degrees) -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, Package included: 1 x thread measuring gauge