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Surveying data and maps are in Therion format. Auriga free software for Palm OS for in-cave surveying with bidirectional data exchange provided with Compass, Survex, Therion, GH Topo/Toporobot, VisualTopo and Walls. BCRA Cave Surveying Group, Compass Points 33. Short review of Therion and other survey software packages (German).
File:Engineers' surveying instruments, their construction, and use (IA cu31924003649401).pdf. Add languages. Page contents not supported in other languages.
A prismatic compass is a navigation and surveying instrument which is extensively used to find out the bearing of the traversing and included angles between them, waypoints (an endpoint of the course) and direction. [1] Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass ...
[1] [2] The Abney level is an easy to use, relatively inexpensive, and, when used correctly, an accurate surveying tool. Abney levels typically include scales graduated in measure degrees of arc, percent grade, and in topographic Abney levels, grade in feet per surveyor's chain, and chainage correction.
It is used in surveying and building with a vertical staff to measure height differences and to transfer, measure and set heights. Also called a builder's level or leveling instrument. Fore sight (FS) – short for "fore sight reading", the last staff reading taken before changing the instrument to the other position.
a reference to find the cited plat map (e.g., a page and/or volume number), and a description of the map's place of official recording (e.g., recorded in the files of the County Engineer ). The legal description of a 2.5-acre (10,000 m 2 ) property under the Lot and Block system may be something like; Lot 5 of Block 2 of the South Subdivision ...
This reduces the need to set the instrument base truly level, as with a dumpy level. Self-levelling instruments are the preferred instrument on building sites, construction, and during surveying due to ease of use and rapid setup time. A digital electronic level is also set level on a tripod and reads a bar-coded staff using electronic laser ...
Z-Library (abbreviated as z-lib, formerly BookFinder) is a shadow library project for file-sharing access to scholarly journal articles, academic texts and general-interest books.