The Schact warping pegs come in a two-part set. One wood block has two pegs to create the porrey cross. The other block has a single peg for the other end of your warp. You clamp the two blocks to a surface and measure your warp between them. For example, if you need a three yard warp, you clamp the blocks three yards apart. Clamps are included. The warping pegs are sanded and ready for finishing if desired.

You can learn more about warping pegs here: