| 摘要 |
The invention relates to a marking aid to permit the marking, on a sheet or other covering intended to cover a wall provided with beams, etc., of the position of electrical connecting boxes mounted in the wall, etc., or of other objects concealed therein. In accordance with the invention, the aid consists of a telescopically adjustable bar (5). At one end (5A) of the bar is a marking disc (6) or some other marking part, and at the other end (5B) of the bar are an impact part (7) and a centre pin (8, 8<1>). The impact part (7) exhibits a holding part (11), which is so arranged as to make contact with the peripheral edge of an electrical connecting box of the kind in question at the marking stage. |
