![]() ![]() ![]() i like to layout pot lights on the floor first then shoot the marks to the ceiling. i find sometimes you have to improvise for it to be a help. also the equasion can be used for plumb.Īs for lasers. same as you can use it to square something 6" long too. using pythag you can set as many points along that 30' line as you want to insure a straight wall. getting the 30' point correct is great, but your wall might be curved. the advantage of pythag is you can make points any where along the line. 345 is the same thing but if you have a 30 ft wall butting into a 80 ft wall, this is too small a triangle to work with. but i find most poeple dont understand its proper use. The Pythagorean theorem is A squared +b squared = c squared. Might be safe to say I'd keep a water-level for use on a remote project or when my laser is down, but otherwise. Then there is a battery issue I've been running mine from a cobbled-up AC transformer rather than keep changing the batteries a couple of times daily sometimes. But it can't project through obstacles or around corners, so there can be "dead zones" where the beam is shadowed by posts or other items. (People can step on the tube, it gets tangled in stuff when you need to pull it around.) The laser gives a level plane, continuously visible at every location needed, at least in theory. The water-level theory is elegant and simple-each water surface will automatically be at the same elevation- but much can go awry: spills change the calibration, algae grows in the water if in use for a length of time, there is friction in the line that impedes free movement of the water, air bubbles will add to this friction and can really mess up readings, and most importantly, it has to be moved from point to point to check and recheck each elevation. I used a water-level before and would only go back to it if forced to. Send us feedback about these examples.A self-leveling rotary laser is key for my projects, leveling and lifting houses. These examples are programmatically compiled from various online sources to illustrate current usage of the word 'plumb bob.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. 2018 Cake pans, coffee pots, cash registers, and a white ElectroChef stove appeared amid scientific instruments such as steel calipers and a brass plumb bob. David Grossman, Popular Mechanics, 17 Jan. Rhett Allain, WIRED, Accurate to within 1/4 of an inch per 100 feet of range, the kit comes with a tripod with quick-adjust legs, a heavy-duty 8-foot aluminum grade rod (feet-inches-eighths), a plumb bob, and a kit box to safeguard the laser during transport. 2019 The plumb bob will hang at the angle reading for your latitude. Andrew Tallon, National Geographic, 16 Apr. 2020 For a long time, the tools used to measure medieval buildings were nearly as old as the buildings themselves: plumb bobs, string, rulers, and pencils. Ryan D'agostino, Popular Mechanics, 24 Oct. 2022 For holes deeper than three feet, drop a plumb bob (a conical weight attached to a string) into it to give you some sense whether the hole itself is plumb and uniformly shaped. Jennifer Ouellette, Ars Technica, Where many competitors use surveying equipment that’s accurate to within a thousandth of a degree to orient their robots on startup, Coordinated often relies on a plumb bob (cost: a few bucks). Recent Examples on the Web Possible uses included: a plumb bob or a loom weight, a liquid sprinkler, a fire starter, a lamp, a smoking pipe, or parts of an apparatus for distillation. ![]()
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