Breithaupt Copri Prismatic Compass
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The Breithaupt Copri is a Schmalkalder type compass with prismatic reading on an oscillation ring. The Copri also allows for simultaneous sighting through the prism slots. The Copri has been designed for setting out and topographic surveys and industrial applications.
Circle diameter: 80mm
Sliding inclination weight.
Spherical level in compass box.
3/8″ internal thread in compass bottom.
The delviery date will be 10-days,we don’t have the service of Arriving at in next day
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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 and direction. Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass, and the length of the surveying lines are measured with a tape or chain or laser range finder. The compass is generally used to run a traverse line. The compass calculates bearings of lines with respect to magnetic needle.
The included angles can then be calculated using suitable formulas in case of clockwise and anti-clockwise traverse respectively. For each survey line in the traverse, surveyors take two bearings that is fore bearing and back bearing which should exactly differ by 180° if local attraction is negligible.
The name Prismatic compass is given to it because it essentially consists of a prism which is used for taking observations more accurately. | In military prismatic compass is used and full form of it is “Service Prismatic Compass Mark III Alpha.
The compass calculates the bearings in whole circle bearing system which determines the angle which the survey line makes with the magnetic north in the clockwise direction. The included angles can be calculated by the formulas F-P ±180 in case of anti-clockwise traverse and P-F ±180 in case of clockwise traverse, where ‘F’ is the fore bearing of forward line in the direction of survey work and ‘P’ is the fore bearing of previous line.