This tool helps you measure and mark perfect 90-degree angles, also known as right angles. To ensure that a corner is square, you can use a tool known as a steel square, carpenter square or framing square. Perpendicular lines meet to create a right angle, which is what you should have at every corner. Corners should be at exactly 90 degrees, which means they consist of two perpendicular lines: one straight horizontal (level) line and one straight vertical (plumb) line. You can also use spirit levels to check if something is plumb, as these tools measure both level and plumb.
That line will be perfectly perpendicular to the horizon, or “plumb.” With the help of the weight, the string follows the path of gravity and goes straight down from the top of what you’re measuring. This tool consists of a weight (usually with a pointed bottom) that is connected to string (also known as a plumb line ).
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How to use a plumb bobĪ plumb bob uses gravity to help you align things properly. You can measure if something is plumb by using a plumb bob or a spirit or laser level. Something that is “plumb” runs perpendicular to the horizon-meaning that when it intersects the horizon, it makes a right (90 degree) angle. “Plumb” is what you call a perfectly vertical line. Laser levels work in all directions, so you can use them to measure level and plumb by pointing at whatever you are checking. If you have to measure multiple lines, a laser level will make things easier than having to place a spirit level on each individual line.
Laser levels use a laser beam of light, to check alignment.Water levels use plastic tubing and cylinders of water to measure level over longer distances than could be achieved with a simple bubble level.(More on that below.) Other types of levels Tip: When you are holding a level, make sure it is on or against a flat surface, such a wall or flat straight boards, to ensure accuracy.
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Learn more about the most important construction tools-and how to use them safely-in MT Copeland’s online class, taught by professional builder and craftsman Jordan Smith. 229910052782 aluminium Inorganic materials 0.A spirit level is only one of the essential tools you’ll need on a construction site.239000011150 reinforced concrete Substances 0.000 description 2.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Deasy Patrick filed Critical Deasy Patrick Priority to US539683A priority Critical patent/US1952745A/en Application granted granted Critical Publication of US1952745A publication Critical patent/US1952745A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US539683A Inventor Deasy Patrick Original Assignee Deasy Patrick Priority date (The priority date is an assumption and is not a legal conclusion.
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Google Patents US1952745A - Windproof plumb bobĭownload PDF Info Publication number US1952745A US1952745A US539683A US53968331A US1952745A US 1952745 A US1952745 A US 1952745A US 539683 A US539683 A US 539683A US 53968331 A US53968331 A US 53968331A US 1952745 A US1952745 A US 1952745A Authority US United States Prior art keywords plumb bob housing bob windproof plumb Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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