Many people collect plumb bobs. Having seen this one on a aucution site a few weeks ago I almost bit the bullet. This one fits perfectly in the multitool world. Lamp and plumb bob combo. Also referred to as a plummet lamp or surveyor's lamp.
"It didn't hurt, flirt, blood squirt, stuffed shirt, hang me on a tree
After I count down three rounds, in Hell I'll be in good company" - The Dead South