azimuth mark
21Brevity code — Contents 1 American/NATO codes 1.1 A 1.2 B 1.3 C …
22Pink Floyd — This article is about the rock band. For the fictional character, see Pink Floyd (fictional character). Pink Floyd …
23Directing point — A cut away drawing of a Coast Artillery battery, showing its two base and stations (upper left), the plotting room (with plotting board), and the directing point (DP) (between the two guns, at right). The directing point, on the surface of the… …
24Geodesy — (pronEng|dʒiːˈɒdɪsi [OED] ), also called geodetics, a branch of earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three dimensional time varying… …
25Opportunity rover — (MER B) Opportunity in April 2003 Operator NASA Mission type Rover …
26Mistral class amphibious assault ship — The Mistral in Toulon harbour Class overview Name: Mistral Builders: STX Europe …
27Ship gun fire-control system — Mk 37 Director c1944 with Mk 12 (rectangular antenna) and Mk 22 orange peel Ship gun fire control systems (GFCS) enable remote and automatic targeting of guns against ships, aircraft, and shore targets, with or without the aid of radar or optical …
28Jodrell Bank Observatory — The 76 m Lovell Telescope at Jodrell Bank Observatory …
29Delaware — This article is about the U.S. state. For the river, see Delaware River. For other uses, see Delaware (disambiguation). State of Delaware …
30Astronomical clock — An astronomical clock is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the sun, moon, zodiacal constellations, and sometimes major planets. DefinitionThe term is loosely used to… …
