The surveyors compass

The surveys compass is the similar to the prismatic compass expect for the following points. There is no prism in it. Readings are taken with naked eye.it is consists of an eye-vane with a fine sight slit. The graduated aluminum rings are attached to the circular box.it is not fixed to the magnetic needle.Technical Data used in the field explained in civil surveyor course in rawalpindi. The magnetic needle moves freely over the pivot the needle shows the reading on the graduated ring. The ring is graduated from 0 degree to 90 degree in four quadrants.

0 degree is marked at the north and south, and 90 degree at the east and west, the letters E east and W west art interchanged from their true positions.Some more details of civil surveyor course in rawalpindi are as under. The figure is written the right way up.The following procedure should be adopted while measuring the bearing by prismatic compass.

The tripod stand is placed at the required station with its legs-well apart. Then the prismatic compass is held by the left hand and placed over the threaded top of the stand. Normally the compass is centered by dropping a piece of stone from the bottom of the compass box. Centering may also be done with there aid of a plumb bob held centrally bellow the compass box.TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join civil surveyor course in islamabad.

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