Compass......

A pair of bronze compasses from Pompeii. Compass (gr. διαβήτης or τόρνoς or καρκίνoς) was used as woodworking tools or geometric instruments as well by the carpenters as by the macons and the architects. It was invented by Kalos or Talos, or ever according to other ancient sources, by Daedalus himself. Bronze compasses similar to those of Pompeii have been founded on the island of Delos, from the 6th century B.C.