Vise-clamp. A piece of metal placed on the vise jaw and passing between it and the work to prevent the jaw teeth from indenting the work.
V-thread. A V-shaped thread, sharp at the top and bottom.
W
Warding file. A thin file suitable for filing out the wards of the keys of door locks, etc.
Washer. A perforated disc of metal, usually forming a seating for some other piece as a rest or a pin.
Wheel lathe. A lathe for turning wheels.
Whitworth’s quick-return motion. A mechanism employed to move a cutting tool faster on its return than on its cutting stroke.
Whitworth’s thread. A screw thread designed by Sir Joseph Whitworth, and having a rounded top and bottom.
Winding strips. A pair of straight edges, used to detect any wind or twist in surfaces that ought to be parallel.
Wing-nut. A nut having wings so that it may be screwed up with the fingers.