Bull's eye level

Bull's eye level

A Bull's eye level is a type of spirit level that allows for the leveling of planes in two dimensions - both the 'pitch' and 'roll' in nautical terms. Standard tubular levels only consider one dimension. Bull's eye levels are used primarily by carpenters in construction, but can also be found as features of compasses or other devices that need to be kept from tipping in certain directions (whether it be for functionality or precision of measurements). Small bull's eye levels are also found incorporated into tripods.

Another name for a Bull's eye level is a "circular bubble" which is the name used by surveyors in the United Kingdom. Surveying instruments such as theodolites (transits) and total stations often have a circular bubble as well as a tubular level or "plate level". The circular bubble is used to roughly level the instrument in two dimensions and then the plate level, being more precise, is used to level the instrument more precisely in each dimension separately by leveling the plate level, then spinning the instrument 90 degrees and leveling the plate level again.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Spirit level — A spirit level or bubble level is an instrument designed to indicate whether a surface is level or plumb. Different types of spirit levels are used by carpenters, stone masons, bricklayers, other building trades workers, surveyors, millwrights… …   Wikipedia

  • Gerald Bull — Gerald Vincent Bull (March 9, 1928 March 22, 1990) was a Canadian engineer who developed long range artillery. He moved from project to project in his quest to economically launch a satellite using a huge artillery piece. To this end he designed… …   Wikipedia

  • Staffordshire Bull Terrier — Infobox Dogbreed akcgroup = Terrier akcstd = http://www.akc.org/breeds/staffordshire bull terrier/index.cfm ankcgroup = Group 2 (Terriers) ankcstd = http://www.ankc.aust.com/stafford.html ckcgroup = Group 4 Terriers ckcstd =… …   Wikipedia

  • Brunton compass — A Brunton compass, properly known as the Brunton Pocket Transit, is a type of precision compass made by Brunton, Inc. of Riverton, Wyoming. Unlike most modern compasses, the Brunton Pocket Transit utilizes magnetic induction damping rather than… …   Wikipedia

  • Target Corporation — This article is about the United States retail company and its stores. For the Australian retail stores, see Target Australia. Target Corporation Type Public company Traded as NYSE:  …   Wikipedia

  • Darts — This article is about the pub game. For the British pop band, see Darts (band). For other meanings, see Dart (disambiguation). Darts Darts in a dartboard Highest governing body WDF First played …   Wikipedia

  • Bullseye (comics) — Superherobox| caption=Bullseye Promotional art by Mike Deodato comic color=background:#ff8080 character name=Bullseye real name=Lester (last name unrevealed) publisher=Marvel Comics debut= Daredevil #131 (March 1976) creators=Marv Wolfman John… …   Wikipedia

  • Lyme disease — Classification and external resources Nymphal and adult deer ticks can be carriers of Lyme disease. Nymphs are about the size of a poppy seed. ICD 10 A …   Wikipedia

  • Energy drink — Energy drinks are beverages whose producers advertise that they boost energy. These advertisements usually do not emphasize energy derived from the sugar and caffeine they contain[1] but rather increased energy release due to a variety of… …   Wikipedia

  • motion picture, history of the — Introduction       history of the medium from the 19th century to the present. Early years, 1830–1910 Origins       The illusion of motion pictures is based on the optical phenomena known as persistence of vision and the phi phenomenon. The first …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”