Saturday, October 27, 2007

Must Have Tool Tip - The Plumb Bob

A simple tool that was even used back in ancient Egypt to build the pyramids, the Plumb Bob uses gravity to establish "plumb" or exactly vertical. The tool is simply a string with a pointed weight on the end. By holding (or fixing) the line on a high point and dropping the line so the weight is close to the ground you will establish an accurate vertical line from one point to the other. This example from Tajima (click here for more info) shows a more elaborate example with a retractable line and also a magnet to be used on metal surfaces and a pin to help with timber.


Here is an image that I found on the "thisoldhouse.com" site
 showing one of these plumb bobs being used by a handyman to help fit a door frame.

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