Scale. 1. A rule or measuring device having lines of division upon it. 2. Proportion of size.
Scarf. The bevel of a piece of metal that is to be lap welded.
Scraper. A hand tool that scrapes rather than cuts the metal.
Screw-cutting lathe. A lathe that has a screw feed with change gears to enable it to cut threads or screws upon the work.
Screw-cutting lathe with independent feed. A lathe that has a lead screw for cutting threads and a separate feed motion for ordinary tool traverse.
Screwing-machine. A machine used to cut screw threads.
Screw-machine. A form of lathe in which the spindle is hollow and a revolving head or turret is employed to carry the cutting tools.
Screw-plate. A tool for cutting external threads on small work.
Screw-thread. The thread upon a screw or other piece of work.
Screw-tool. Another name for a chaser.