center gauge
gauge used in lathe work for checking the angles when grinding the profiles of single-point screw-cutting tool bits and centers
en-GB/ˈsɛntə ˈɡeɪd͡ʒ/
en-US/ˈsɛnɚ ˈɡeɪd͡ʒ/
gauge used in lathe work for checking the angles when grinding the profiles of single-point screw-cutting tool bits and centers