This retractable Gammon Reel attaches to your plum bob and provides you with instant rewind of your plumb bob string.
Pull the string out as much as you need, slip over your plumb-bob and then retract the length as needed depending on the height of your tripod. Eliminates tangled, broken and muddy string, no knots needed. 1.9m length
Picture shown with Plumb Bob (not included)