Using rotary switch, can be adjusted freely Tempering treatment, strong hardness Measuring thread and external thread pitch Measuring gauge To 60 degree thread (60 degree metric),55 degree thread (55 degree inch) Material:Carbon steel Color: as picture shows Quantity: 1 pc Type:60 degree metric,55 degree inch,60 degree metric+55 degree inch 60 degree metric Measuring Range: 0.4/0.45/0.5/0.6/0.75/0.8/1/1.25/1.5/1.75/2/2.5/3/3.5/4/4.5/5/5.5/6mm 55 degree inch Measuring Range: 4/4.5/5/6/7/8/9/10/11/12/14/16/18/19/20/22/24/28/32/48 Package included: 1set x thread pitch gauge Note: degree equal to "°". Please allow 1-5mm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same