Surveying Instruments
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Transcript of Surveying Instruments
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Surveying Instruments
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A surveyor’s level: a revolving telescope on a tripod
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It is fitted with cross hairs,
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and spirit level
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It is used by surveyors in finding points of identical elevation
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Automatic digital level uses barcode technology
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To get an elevation measurement from a special level rod
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This produces a direct electonic reading and storage of data about elevation…
Possible transcription errors are eliminated.
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More expensive than a standard high quality automatic level.
• New digital levels have been further employed expanding their memory.
• When you have measured height and distance, all you have to do is aim a special code staff
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Then you press a single key
and the results are immediately shown on the LCD display.
This way “digital” gets height and distance measurement very simple.
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This system can be used as long as the cross hair is visible
• In low light conditions• In very bright sunshine
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These instruments have been designed
• to provide accurancy which doesn’t change in adverse environments
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Heat shimmer