Difference between Prismatic compass and Surveyor compass?
|Prismatic compass||Surveyor compass|
|In this compass the reading are taken with the help of prism.||There is no prism on it. Reading are taken with naked eyes|
|With the help of prismatic compass whole circle bearing (W.C.B) can be measured||With the help of surveyor compass reduced bearing can be measured.|
|Graduation in prismatic compass are marked from 0$^\circ$ to 360$^\circ$||Surveyor compass is divided into four quadrant and graduation are marked from 0$^\circ$ to 90$^\circ$ in each quadrant.|
|In a prismatic compass a mirror is provided with the sight vane.||In a surveyor compass no mirror is attached to the objective vane.|
|Sighting the object as well as reading the graduated circle can simultaneously be done without changing the position of the eye.||Sighting the object as well as reading the graduated circle cannot be done simultaneously without changing the position of eye.|