Where can sources of error come from when making angular measurments with a theodolite? - theodolite error
With respect to the accuracy of the synthesizer and measurements on the left wall and averaging their raight
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Sunday, February 14, 2010
Theodolite Error Where Can Sources Of Error Come From When Making Angular Measurments With A Theodolite?
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2 comments:
Firstly, a professor of Wikipedia:
A theodolite is an instrument for measuring horizontal and vertical angles, as used in triangulation networks. It is an important tool in surveying and engineering work, but theodolites have been adapted for other specific purposes in fields such as meteorology and technology to launch missiles. A modern theodolite consists of a telescope mounted movably within two perpendicular axes, the horizontal axis and the cones, or vertical axis. When the telescope to a desired object, the angle of each axis with great precision, are usually measured in the scale of arcseconds.
From experience, the most common errors occur;
Theodolite, albeit not perfectly flat horizotal with the axis,
Horizon --Azimuth Indicator horizontal or vertical drop to zero before starting angle
Angle-to give a bad reading or angle is not read correctly by the inspector.
Required:
The unit must be at the state level during the initial installation and the level of the mind must be controlled visually checked frequently during the investigation. The book of instructions for the theodolite will be the launch procedure.
There are two types of error: error in the instrument and human error.
Examples of possible errors, the former in the rankings of angular scale of the mechanical instability of the moving parts of the instrument, and the misalignment of the instrument.
Examples are errors while reading the device, especially when a fine adjustment to read, transfer error - Write numbers in the correct order, the involuntary movement of the device and / or a tripod between readings
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