How To Use Theodolite Survey

Published Aug 2, 2022

2 mins read

414 words

chinna13

Chinnadurai

The theodolite is the most particular device used for duration of horizontal and vertical angles. It furthermore may be used for severa surveying operations collectively with installing grades, starting up curves, extending survey lines, identifying versions in elevation etc.
Two schooling classified:
ü Transit theodolite
ü Non-transit thedolite Essential factors of a transit theodolite
Telescope:
A thedolite is provided with a telescope to sight the an extended manner off devices clearly. It is installation on a spindle known as horizontal axis
Two spindles:
There are
spindles with axes one withinside the specific. The outer axis is hallowed and its interior is ground conical to in form the crucial vertical axis that may be a strong and conical.
Lower plate:
The outer axis is hooked up to the lower plate moreover known as the dimensions plate, having its detail beveled. The detail is silvered and graduated form Oo to 360o withinside the clockwise direction. The lower plate is provided with a clamped tangent screw or the gradual motion screw with the useful resource of the usage of manner of which it may be ordinary at any favored function
Upper plate:
The better plate moreover known as the vernier plate is hooked up to the inner axis. A clamp and a tangent or gradual motion screw are furnished for the purpose of because it need to be fixing the vernier plate to the dimensions plate. When every plates are clamped together and the lower clamp or loosened, the device can be have come to be round about its outer axis; while if lower plate be clamped and the vernier plate be loosened, the device can be have come to be round about the inner axis. Before each of the tangent screw is have come to be, the corresponding clamp want to be tightened.
Level Tubes:
Two spirit ranges known as positioned at right angles to each specific are ordinary on the better ground of the venires plate for leveling withinside the device.
Vertical circle:
The vertical circle and graduated and is hooked up to the horizontal axis of the telescope and as a stop forestall stop end result it rotates with the telescope. The circle is graduated each non-prevent from Oo to 90o. By way of vertical clamp and tangential screw, the telescope can be set because it need to be at any function in vertical plane.