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"An altazimuth theodolite of an improved pattern now used on the Ordnance Survey. The horizontal circle of 14 inches diameter is read by three micrometer microscopes; the vertical circle has a diameter of 12 inches, and is read by two microscopes." — Encyclopedia Britannica, 1893

Altazimuth Theodolite

"An altazimuth theodolite of an improved pattern now used on the Ordnance Survey. The horizontal circle…

The Domesday or Book of Winchester was a survey or census of England completed in 1086 for William the Conqueror.

Domesday Book

The Domesday or Book of Winchester was a survey or census of England completed in 1086 for William the…

An illustration of two men drawing on the a sidewalk after measuring a distance.

Men Drawing on Sidewalk

An illustration of two men drawing on the a sidewalk after measuring a distance.

To take a general or comprehensive view of or appraise, as a situation, area of study, etc.

Instrumentation for Survey

To take a general or comprehensive view of or appraise, as a situation, area of study, etc.

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.

Survey of Lake Front in Chicago

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.

A team of surveyors in the country.

Surveying

A team of surveyors in the country.

"An instrument for the measurement of horizontal angles, consisting essentially of a telescope mounted so as to move on a pivot both horizontal and verticaly." — Williams, 1889

Theodolite

"An instrument for the measurement of horizontal angles, consisting essentially of a telescope mounted…

"An instrument much employed in land-surveying for the measurement of angles horizontal and verticle." — Chambers, 1881

Theodolite

"An instrument much employed in land-surveying for the measurement of angles horizontal and verticle."…