bubble octant and bubble sextant are air navigation instruments. Although an instrument may be called a "bubble sextant", it may actually be a bubble...

The octant, also called a reflecting quadrant, is a reflecting instrument used in navigation. The name octant derives from the Latin octans meaning eighth...

navigation was blamed on an out-of-adjustment bubble octant that gave a systematic bias to all of its readings. The octant suffered a severe shock in a failed takeoff...

remedied that by borrowing a modern bubble octant designed especially for airplane navigation." Modern bubble octants were expensive, and Noonan apparently...

Colms: A constable and aide to Constable-General Claude Aradel in the Fourth Octant, serving as an analyst and his executive assistant. She is the illegitimate...

engineers pushing west, and it replaced the railroad compass, sextant and octant. Theodolites were later adapted to a wider variety of mountings and uses...

sixth"). Both smaller and larger instruments are (or were) in use: the octant, quintant (or pentant) and the (doubly reflecting) quadrant span sectors...

 2011 (2011-01-31) Items appraised include a 1930s Bendix A7 World War II aircraft octant; a 1995 Nintendo Virtual Boy video game console; an 1880s doctor's buggy...

Germany – Haber process (ammonia synthesis) John Hadley (1682–1744), UK – octant Waldemar Haffkine (1860–1930), Russia/Switzerland – first anti-cholera and...

map in which the spherical surface of the earth was divided into eight octants, each flattened into the shape of a Reuleaux triangle. Similar maps also...

and New York for many years. In 1732 Sisson was selected to make a brass octant to John Hadley's new design. The instrument proved reliable and easy to...

Inclinometer Mural instrument Protractor Quadrant Reflecting instruments Octant Reflecting circles Sextant Theodolite and total station See also the section...

and the invention of the octant after 1730. By the late 18th century, navigators replaced their prior instruments with octants and sextants. Significant...

successfully tested by Edmond Halley, sustainable to a depth of 55 ft c. 1730: Octant navigational tool was developed by John Hadley in England, and Thomas Godfrey...

Harpsichord-viola Aerial screw Crossbow Fighting vehicle Robot Self-propelled cart Octant projection Rapid fire crossbow Sonar Viola organista World Map Leonardeschi...

morning and joined Lamotte-Picquet, the aviso Marne, and the survey ship Octant in the search. Strong currents interfered with the search, but during the...