| 摘要 |
The invention relates to a block, in particular for trawl wires and the like. In order to facilitate maintaining a desired, usually mutually identical length of port and starboard trawl wires, the block comprises a sensing arrangement 20a, 20b connected to it, and, preferably electrically connected to this arrangement, an indicating arrangement 21 for indicating the angle of torsion or rotation of the block sheave 3 from a predetermined starting position and thus the length of the wire fed out from the block. <IMAGE> |
