spirit level


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spirit level,

tool for determining whether a surface is horizontal. It consists essentially of a slightly bent transparent tube that is held in a frame. The tube contains some alcohol, ether, or similar fluid but is not entirely filled, so that it also contains a small bubble. The position of the bubble within the tube indicates whether the instrument is horizontal. The spirit level used by carpenters and masons has two tubes at right angles to each other, so that the device registers a vertical as well as a horizontal position. The plumb line was used to determine vertical position from ancient times until the 19th cent. At that time the spirit level, which was invented in France during the 17th cent., came into general use and replaced the plumb line in some applications.

Spirit level

A leveling instrument used for testing the horizontal or vertical position of any structural member.

spirit level

[′spir·ət ‚lev·əl]
(civil engineering)

spirit level

A closed glass tube of circular cross section, usually set in a device or instrument; nearly filled with liquid, so that a bubble is formed, the centering of which is used to determine true horizontal or vertical directions; a level.

spirit level

a device for setting horizontal surfaces, consisting of an accurate block of material in which a sealed slightly curved tube partially filled with liquid is set so that the air bubble rests between two marks on the tube when the block is horizontal
References in periodicals archive ?
After reading The Spirit Level, it is easy to understand why these methods might work; however, what remains unclear is how agreement could be met, which appears to be a major stumbling block.
The reference to the spirit level and the mouse is not annotated by Nicolson and Trautmann.
We are delighted that you got the investment you needed to get your spirit level out there.
The Spirit Level shows that increases in social inequality are the source of many contemporary social problems.
The Spirit Level, by epidemiologists Richard Wilkinson and Kate Pickett suggests that in some cases economic growth can damage physical, mental and spiritual health.
He then grabbed a spirit level and chased them off for a second time and said he "thought no more about it".
Kisby, of Clovelly Road, Castletown, was arrested and police seized a laser spirit level of the type used in DIY.
He utilised a combination of spirit level and plumb-line to ensure the developing wall harmonised with the cornerstone.
However, a national newspaper was forced to make an apology after it came to light that, in fact, it wasn't a cricket bat at all, but a spirit level which did the damage.
The compact tool kit (pictured) comprises a spirit level, tape measure, screwdriver with a selection of heads, Stanley knife and socket spanner.
A: You will need a good spirit level, some thick low tack masking tape such as Easy Mask, a tape measure and some tailor's chalk.