sighting distance
21Loch Ness Monster — For other uses, see Loch Ness Monster (disambiguation). Nessie redirects here. For other uses, see Nessie (disambiguation). the Loch Ness Monster (Nessie, Niseag[1] …
22Battle of the Coral Sea — Part of the Pacific Theater of World War II …
23New South Greenland — Map showing Morrell s reported location of the New South Greenland coast (1823, red line), and Ross s Appearance as reported by Sir James Clark Ross in 1841. The dotted line indicates the area of Captain Johnson s 1821 voyage …
24Navigation — This article is about determination of position and direction on or above the surface of the earth. For other uses, see Navigation (disambiguation). Table of geography, hydrography, and navigation, from the 1728 Cyclopaedia. Navigation is the… …
25Jimmy Carter UFO incident — The Jimmy Carter UFO Incident is the name given to an incident in which future US President Jimmy Carter reported seeing an unidentified flying object while at Leary, Georgia in 1969.While governor of Georgia, Carter was asked to file a report of …
26Uriel Machine — A Uriel machine is an example of a solar declinometer first proposed by Christopher Knight and Robert Lomas in their 1999 book Uriel s Machine . Using a seven step algorithm, two sighting rods and a number of wooden posts, an individual can build …
27Octant (instrument) — Octant. This instrument, labelled Crichton London, Sold by J Berry, Aberdeen, appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm and mirror supports are brass. Rather than use a sighting telescope, this… …
28Course 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… …
29surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …
30Drift 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… …
