found: Work cat.: U.S. Coast and Geodetic Survey. Mercer County, Pennsylvania : descriptions and plane coordinates of stations, 1940?:foreword (triangulation and traverse stations) p. 1 (triangulation stations)
found: Geodetic glossary, 1986:triangulation station (See station) station (station (1) A physical location or site at which, from which, or to which observations have been made. (2) A point representing the physical location or site at which, from which, or to which observations have been made. The principal kinds of station, named for the kind of observations made there, are: air station, gravity station, magnetic station, survey station (including bench marks and triangulation stations), and tide gauge or tidal station.) station, triangulation (A point which has had its location determined by triangulation)
found: Wikipedia, Sept. 3, 2019:Triangulation station (A triangulation station, also known as a triangulation pillar, trigonometrical station, trigonometrical point, trig station, trig beacon, or trig point, and sometimes informally as a trig, is a fixed surveying station, used in geodetic surveying and other surveying projects in its vicinity. The nomenclature varies regionally: they are generally known as trigonometrical or triangulation stations in North America, trig points in the United Kingdom, trig pillars in Ireland, trig stations or points in Australia and New Zealand, and trig beacons in South Africa; triangulation pillar is the more formal term for the concrete columns found in the UK)
found: Collins English dictionary, via WWW, Sept. 3, 2019(triangulation station: a point used in triangulation as a basis for making maps. Triangulation stations are marked in a number of ways, such as by a tapering stone pillar on a hilltop. Also called (informal): trig point or (Austral. and NZ) trig)
found: U.S. Department of Defense terminology, via WWW, Sept. 3, 2019(triangulation station: A point on the Earth, the position of which is determined by triangulation. Also called trig point.)
found: OCLC, Sept. 3, 2019(titles: Descriptions of triangulation stations in Georgia; Astro-geodetic deflections of the vertical at first-order triangulation stations; Astronomical azimuth determinations on triangulation stations in 1962-1970; Aerial photographs of Australian triangulation stations (trig stations) and astronomical stations; Geographic positions of triangulation stations. California; Geographic positions of triangulation stations. Colorado; Triangulation stations along the Arctic coast, adjacent to the Canning River, Alaska; Guide to the historic trigonometrical stations of Sydney's north; Register of trigonometrical stations for city of Sydney and environs; Sketch showing trigonometrical stations near Dalgety; Trig station register; Trig station on Mount Kosciuszko, Snowy Mountains, New South Wales, 1935; Lambert coordinates of trigonometrical points in the Coblenz area; Trig beacon - Muizenberg Peak - view to east showing climbers at foot of stone cairn, Muizenberg Beach & False Bay below to l.)
