spirit level sextant

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• Gago Coutinho — Carlos Viegas Gago Coutinho, GCTE, GCC, generally known simply as Gago Coutinho (pron. IPA2| gagu co(ou) tiɲu) (17 February 1869 ndash;18 February 1959) was a Portuguese aviation pioneer that, together with Sacadura Cabral (1881 1924), was the… …   Wikipedia

• Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… …   Wikipedia

• Elton's quadrant — An Elton s quadrant is a derivative of the Davis quadrant. It adds an index arm and artificial horizon to the instrument. It was invented by John Elton a sea captain who patentedhis design in 1728Bennett, Jim, Catadioptrics and commerce in… …   Wikipedia

• Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea …   Wikipedia

• compass — Synonyms and related words: Gyrosin compass, Johansson block, RDF, T square, accept, accomplish, achieve, acquire, aesthetic distance, alentours, ambience, ambit, amount, annex, attain, beleaguer, beset, besiege, blockade, border line,… …   Moby Thesaurus

• gauge — Synonyms and related words: Johansson block, T square, adjust, amount, amplitude, appraise, appreciate, area, assay, assess, barometer, basis, benchmark, bigness, body, breadth, bulk, calculate, caliber, calibrate, caliper, calipers, call, canon …   Moby Thesaurus

• Georg Friedrich von Reichenbach — Infobox Person name = Georg Friedrich von Reichenbach image size = 160px caption = birth date = 1771 08 21 birth place = Durlach, Baden, Germany death date = 1826 05 21 death place = Munich, Germany occupation = Scientific instrument maker spouse …   Wikipedia

• Harold Gatty — Harold Charles Gatty (5 January, 1903, Campbell Town, Tasmania 30 August, 1957, Fiji) was an Australian navigator, inventor, and aviation pioneer. Charles Lindbergh called Gatty the Prince of Navigators.… …   Wikipedia

• Hadley, John — ▪ British mathematician born April 16, 1682, Hertfordshire, England died February 14, 1744, East Barnet, Hertfordshire       British mathematician and inventor who improved the reflecting telescope, producing the first such instrument of… …   Universalium

• direction finder — Synonyms and related words: Bourdon tube, Gyropilot, Gyrosin compass, HFDF, Mach meter, RDF, absolute altimeter, accelerometer, aerial reconnaissance camera, aerometer, aeroscope, air log, altigraph, altimeter, ammeter, anemograph, anemometer,… …   Moby Thesaurus

• instrument — Synonyms and related words: Bourdon tube, Charlie McCarthy, Danish balance, Federal, Gramophone, Gyropilot, Mach meter, Roman balance, Teletype, Weightometer, X ray machine, absolute altimeter, accelerometer, adapt, aerial reconnaissance camera,… …   Moby Thesaurus