Surveying Instruments and Techniques.

Surveying Instruments and Techniques.

C017/3439 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 90.4MB

Downloadable file size: 7.0MB

Price image Pricing

Please login to use the price calculator


Caption: Plate from 18th century encyclopedia showing illustrations of various surveying instruments and techniques. Shown are proceedures for compass surveying, triangulation, and leveling. Instruments shown include; gauging rod, sighting telescope, barometers, perambulator and plain tables. In levelling a typical procedure is to set up the instrument within 100 metres of a point of known or assumed elevation. A rod or staff is held vertical on that point and the instrument is used manually or automatically to read the rod scale. This gives the height of the instrument above the starting (backsight) point and allows the height of the instrument above the datum to be computed.

Release details: Model release not required. Property release not required.

Keywords: backsight, barometer, compass, compass surveying, datum, encyclopedia, gauging rod, instrument, level, levelling, perambulator, plain, plain table, rod scale, scale, sighting telescope, staff, survey, surveying, table, triangulation

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.