sight compass
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Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass … Wikipedia
Compass Centre — The Compass Centre, when it was a British Airways facility Compass Centre is an office building on the grounds of London Heathrow Airport in the London Borough of Hillingdon. The building serves as BAA Limited s head office … Wikipedia
Course Setting Bomb Sight — The CSBS Mk. IX mounted in a Fairey Battle. The bomb aimer is sighting through the white ring shaped backsights to the pin shaped foresights (just visible against the armoured cable) and holding the bomb release switch in his right hand. The… … Wikipedia
Hand compass — Parts of a hand compass A hand compass (aka hand bearing compass or sighting compass) is a term for any compact magnetic compass capable of one hand use and fitted with a sighting device to record a precise bearing or azimuth to a given target or … Wikipedia
Point of sight — Point Point, n. [F. point, and probably also pointe, L. punctum, puncta, fr. pungere, punctum, to prick. See {Pungent}, and cf. {Puncto}, {Puncture}.] 1. That which pricks or pierces; the sharp end of anything, esp. the sharp end of a piercing… … The Collaborative International Dictionary of English
Mark XIV bomb sight — The Mk. XIVA sighting head, which would be mounted in the front of the aircraft and connected to the computor by the cables coiled up on the left. The main features are the gyrostabilizer in the large cylinder, and the collimator on the moving… … Wikipedia
Drift Sight — This article is about the World War I bombsight. For the aircraft instrument for measuring wind speeds, see drift meter. A Mk. I Drift Sight mounted on the side of an Airco DH.4. The lever just in front of the bomb aimer s fingertips sets the… … Wikipedia
Points of the compass — Point Point, n. [F. point, and probably also pointe, L. punctum, puncta, fr. pungere, punctum, to prick. See {Pungent}, and cf. {Puncto}, {Puncture}.] 1. That which pricks or pierces; the sharp end of anything, esp. the sharp end of a piercing… … The Collaborative International Dictionary of English
prismatic compass — noun : a surveyor s hand compass provided with a triangular glass prism so adjusted that the compass can be read while taking a sight * * * a hand compass equipped with sights and prisms to permit aiming the instrument at a point and at the same… … Useful english dictionary
prismatic compass — A compass with a prism attached so that the compass card can be read at the same time as the compass is directed into the line of sight to a distance point [25] … Lexicon of Cave and Karst Terminology
Line of sight — Line Line, n. [OE. line, AS. l[=i]ne cable, hawser, prob. from L. linea a linen thread, string, line, fr. linum flax, thread, linen, cable; but the English word was influenced by F. ligne line, from the same L. word linea. See {Linen}.] 1. A… … The Collaborative International Dictionary of English
