Features 1、The probe tip head is made of ruby, which is resistant to abrasion. 2、This contact point has an M1.4 thread size, and is used for measuring instruments, precision calculating instruments. 3、Ruby probe has no interference during use and has good light transmission. 4、Easy to use and it can fit your dial test indicator well. 5、An essential tool for dial test indicator. Specification Features: The probe tip head is made of ruby, which is resistant to abrasion. This contact point has an M1.4 thread size, and is used for measuring instruments, precision calculating instruments. Ruby probe has no interference during use and has good light transmission. Easy to use and it can fit your dial test indicator well. An essential tool for dial test indicator. Specification: Condition: 100% brand new Weight: 1g/0.04oz Type: lever dial indicator Scope of application: lever dial indicator, dial indicator Range: 1.4 Accuracy: 0.01 Resolution: 0.01 Dividing value: 0.01 Ball Diameter: 2mm/0.1inch Thread: M1.4 Length: 16mm/0.6inch Package List: 1* Ruby Contact Points Package List