Tram-staff.
(Milling.) A miller's straight-edge, which is employed to test the squareness of the spindle with the face of the stone. The gage-staff B is centered upon the millstone by means of the circular center fitting over and around the spindle b. k k are spiritlevels. The red-staff is a straight rule with a red edge, to lay upon the stone and touch with red any prominent parts, in order that they may be reduced to the general level.
Matthews's tram-joint. |
Tram-staff. |