Access over 20 million homework & study documents

Introduction to theodolite

Content type
User Generated
Subject
Engineering
Type
Study Guide
Rating
Showing Page:
1/32

Sign up to view the full document!

lock_open Sign Up
Showing Page:
2/32

Sign up to view the full document!

lock_open Sign Up
Showing Page:
3/32

Sign up to view the full document!

lock_open Sign Up
End of Preview - Want to read all 32 pages?
Access Now
Unformatted Attachment Preview
Theodolite: Introduction Introduction  Theodolite is used to measure the horizontal and vertical angles.  Theodolite is more precise than magnetic compass.  Magnetic compass measures the angle up to as accuracy of 30’. However a vernier theodolite measures the angles up to and accuracy of 10’’, 20”.  There are variety of theodolite vernier, optic, electronic etc. Type of theodolite VERNIER THEODOLITE Vertical axis Traverse/horizontal axis Vertical circle rigidly fixed to the telescope Line of Sight Alidade assembly  Vernier theodolite is also known and transit.  A transit theodolite is one in which the telescope can be rotated in a vertical plane. Horizontal circle assembly Levelling head assembly Three assemblies of Theodolite  Main parts of a theodolite  Levelling head (7): Levelling head is used to attach the instrument to tripod and attach the plumb bob along the vertical axis of the instrument. MAIN PARTS-2  Lower plate/circle plate (18): an annular horizontal plate with the graduations provided all around, from 0 to 360°, in a clockwise direction. The graduations are in degree divided in to 3 parts so that each division equals to 20 min.  Horizontal angles are measured with this plate.  The size of the theodolite is defined by the diameter of horizontal circle.  Upper plate (17): Horizontal plate of smaller diameter provided with two verniers. on diametrically opposite parts of its circumferen ...
Purchase document to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Anonymous
Really useful study material!

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4