Machined surface on the caliper support on which a sliding caliper slides.
Supports or tracks set on a slope, down which a caisson slides at the time of launching. Used also for the apparatus by which cars are unloaded on a hill-side.
The hardened and ground surface of a lathe that supports and aligns the tailstock and carriage. Also sometimes refers to the dove tail slide mechanism on a milling machine that supports and aligns the machine table and the saddle.