The 12 FT Gammon Reel is designed for use in the construction field. Plumb bob not included.
Heavy-Duty Manual Bonding/Grounding Reel
Plumb Bobs – Arco Contractors Supply
VINTAGE BRASS PLUMB BOB~ GAMMON REEL MADE IN USA~
Gammon Reel 012 12-Feet Surveyors with Orange Line
Any of y'all ever used a Dist-A-Line? : r/Surveying
Gammon reel survey
White Cap GAMMON REEL 6.5' Retracting Plumb Line Reel
6-1/2 ft. Gammon Reel
Gammon Reel 6-1/2-ft (1.9m) for Surveyors