Traceable Fiberglass Tension spring Ø 11 mm with copper core inside, 250 meters

Because of the copper wire, this fibre-optic tension spring can be followed in a sewer with a cable detector, to which a signal can be applied by a signal generator. (For leica, this could be a DA220 or DA230)

Example of use:

Type: 

Weight: 56.5 Kg  

Bend radius: 770 mm

M12 treth both sides and starting spinner with shackle