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What is a torpedo level definition?
A torpedo level is a type of spirit level that is an essential tool for any professional working in tight spaces. The body of the level is made of either metal or plastic and contains two or three tube vials. These tubes, or vials, contain yellowish-green additives and are used to determine the surface level. via
What is another name for a torpedo level?
Typically nine inches long and tapered at the ends, the torpedo level is sometimes also known as a canoe or boat-shaped level. The body of the level contains two or three spirit tubes. The torpedo level is handiest when working in tight quarters. via
Why do some levels have two vials?
The bubble in the spirit level or bubble level is simply made of air. There are two vials so the level will work on when lying on either its top or bottom edges. Since air bubbles seek the highest point, the bottom vial (the one shaped like a rainbow) will be the working vial. via
What do the lines on a spirit level mean?
What Are The Outer Lines For? Many spirit (also called bubble) level vials have two sets of lines. But when it touches one of the outer lines, it means the level is pitched at a 2-percent grade (about ¼ inch per foot of run), the slope required for waste lines, sidewalks, and rain gutters to drain properly. via
How accurate is a bubble level?
Typically, the vials in a spirit level are a yellowish-green color with additives for UV protection and maximum performance in temperatures ranging from -20 degrees F to 130 degrees F. The best spirit level is accurate to within plus or minus 0.5 millimeters/meter, or 0.005 inches/inch or . via
What is the liquid in a level bubble?
The coloured liquid used in spirit levels is generally alcoholic, hence the level's name, which is commonly ethanol dyed green or yellow; and alcohol is used instead of water as the latter freezes more easily and provides more friction, preventing smooth bubble movement. via
What's the best torpedo level?
The Best Torpedo Level
Can a level be off?
Often professional contractors will write “NO” or “OFF” on that side and only use the good side. A good, accurate level is a precision tool and should be treated as such. Don't drop it and make sure you keep it out of direct sunlight, which can affect accuracy. via
What is the best level to buy?
10 Best Levels – Reviews
How do you read a level with two bubbles? (video)
How much fall is half a bubble on a level?
Quote: A 1/4 of a bubble on any level is 1/4" per foot slope....1/8" bubble is 1/8" slope ect..... via
How do I know if my A level is accurate?
You can perform a similar test to check that your level gives you an accurate plumb reading. Hold the level up against a door frame, take note of the bubble location, then flip it vertically 180 degrees and check for plumb again. If the bubble stays in the same location, your level is accurate. via
What is bubble level meaning?
A spirit level, bubble level, or simply a level, is an instrument designed to indicate whether a surface is horizontal (level) or vertical (plumb). via