Plumb Bobs

The 6 1/2-foot (2 m) Gammon Reel helps you set up and deploy a clean, accurate plumb. Simply draw the bob to the desired position and stop by applying finger pressure; a steel clock spring retracts the string back into the case. Weighs 0.11 lb (0.05 kg).

Replacement Point fits all SECO plumb bobs.

This SECO 32 oz (907 g) plumb bob is precision-machined from solid brass. It includes a hardened steel point. Each bob contains storage area for a spare point. Weighs 32 oz (907 g).

This SECO 24 oz (680 g) plumb bob is precision-machined from solid brass. It includes a hardened steel point. Each bob contains storage area for a spare point. Weighs 24 oz (680 g).

The 12-foot (3.7 m) Gammon Reel is a handy retracting plumb bob cord reel. It automatically rewinds when not in use. Weighs 0.20 lb (0.09 kg)

This SECO 16 oz (454 g) plumb bob is precision-machined from solid brass. It includes a hardened steel point. Each bob contains storage area for a spare point.

Braided mason twine doesn’t come apart even when reused. It is perfect for large jobs and everyday use. You can also nick it with a trowel and it won’t unwind. Another benefit is that braided mason line does not spin as much as a twisted line, bringing plumb bobs to rest sooner. FEATURES 18-gauge line with an approximate tensile strength of 155 pounds. 1000 feet = 1 pound.

This SECO 18 oz (510 g) plumb bob is precision-machined from solid brass. It includes a hardened steel point. Each bob contains storage area for a spare point.