By A Mystery Man Writer
Lo Ink Specialties Dist-A-Line Surveying Prism & Plumb Bob System
The 12 Gammon Reel is used to suspend a plumb bob under a surveying instrument. It can also be used to suspend a plumb bob while providing a target to accurately position with a surveying instrument. Use the 12' large Gammon reel as an aid to set up and deploy a clean, accurate plumb. Slip the reel into your palm and draw the bob to desired position and stop with finger pressure. Steel clock spring zips the string back into the case.
12 ft Gammon Reel 11-729
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