| 摘要 |
PROBLEM TO BE SOLVED: To enable simple position determination to be performed without dispersion caused by workers in laying a conduit into a box in the construction of electric facilities. SOLUTION: Retangular plates 1 show the nominal codes representing kinds or standards of the conduits, and are each provided with a base line 2 and a hole that shows the center position of a wire passing hole to the base line. The plates are prepared by the number matching that of the conduits that are passed through. These rectangular plates are arranged to match the reference line on the wire-passing through wall surface of a box 5. The hole positions are marked on the wall surface by utilizing the hole of each rectangular plate 1. |
