Personal safety cable for fire fighter in smoke-filled premises has lengths marked by metal lugs

摘要

A personal safety cable (C) for fire fighters is deployed from a reel within a housing (A). The cable bears metal markers secured at intervals of 1.5 m, 6 m, 12 m. The metal markers are 8 mm diameter spheres. On reaching the desired extension the metal ball engages with a notch in a holding device.