The plumb bob confirms amount of moment and direction, easily, since 5 years ago. Here is a picture of me checking my shed for movement after 5 years of ground shifting hot summers and freezing winters. I use mine to mark whole lengths of studding inside finished walls when hanging stuff like cupboards and shelves, verifying vertical runs of pipe, setting picture frames, checking walls and door frames, etc, etc. Laser beams can diffuse apart over distance, but the plumb line remains true from one end to another. And of course they can sit in place all day while you build that perfect tall wall. Theres no waiting for a standard plumb bob to stop moving around thanks to a quick-settling pendulum. Results Amazon's Choice Johnson Level & Tool 08 Steel Hexagonal Plumb Bob, 8 oz., Steel Finish, 1 Pack 257 100+ bought in past month 795 List: 8.78 FREE delivery Wed, Sep 13 on 25 of items shipped by Amazon Rack-A-Tiers 88455 Self Levelling Magnetic Damping Laser Plumb Bob 13 17349 FREE delivery Sep 12 - 15 Only 1 left in stock - order soon. If used with a protractor (or even a carpenters speed square) degrees can be measured. for up/down plumb, align and level applications (the bottom point’s accuracy is 1/4 In. The Bosch GPL100-50G features a five-point, self-leveling laser with 1/8 In. They can provide a line of 'marks' very quickly across great lengths when levels and lasers fail or not practical to use. Bosch Green 125-ft Self-Leveling Indoor Line Generator Laser Level with 5 Spot Beam. Plumb bobs and their lines, can convey a sense of 3D alignment very quickly, in some cases when levels and lasers can't. Yet plumb bobs never need batteries, never need to be calibrated, and are foolproof except perhaps in strong wind. Plumb bobs need a little time to 'settle' and many people simply don't have time or patience, thus they have fallen out of favor with the speed and ease of use of spirit levels and laser.
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