| 摘要 |
PCT No. PCT/JP93/00260 Sec. 371 Date Oct. 29, 1993 Sec. 102(e) Date Oct. 29, 1993 PCT Filed Mar. 1, 1993 PCT Pub. No. WO93/18367 PCT Pub. Date Sep. 16, 1993.A scale usable as a life line includes a metal wire 5 of high tensile strength with graduation 6 in a longitudinal direction thereof, a drum 2 for winding the metal wire 5 thereonto, a casing 1 accommodating the drum 2 while permitting the same to rotate, and a magnifying glass 7 for allowing the graduation 6 to be read, wherein the metal wire 5 of high tensile strength is formed of a strand comprised of a plurality of steel wires of a fine grained composition each having a diameter of 10 to 100 mu m and a coat of a synthetic resin covering the strand.
|
