Mapping science

Mapping science

The systemic study of the processes and designs involved with map making.

Industry: Earth science

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Mapping science

Centre of level

Earth science; Mapping science

A manufacturer's term for the spindle or spindles which are vertical when the levelling instrument is in used, and about which the levelling instrument, or a part of it, rotates.

Border

Earth science; Mapping science

(1) The outer part or edge of anything; margin, verge. (2) A boundary. (3) A frontier of a state or of the settled part of a country; a district on the frontier.

The image presented when the bubble in a spirit level is viewed through an optical system that shows the bubble split in half lengthwise, one of the halves being then reversed end for end and placed ...

Cam inversor

Earth science; Mapping science

An inversor embodying a cam which follows a specially-shaped track and used in rectifiers and similar instruments to keep the photographic negative, the lens system's perspective center, and the ...

Cirque

Earth science; Mapping science

An armchair-like valley having a steep, nearly vertical wall at the back (head), a concave floor meeting the back in a sharp break of slope, and a lip, at the front end (entrance), which may be of ...

Long-range navigation chart

Earth science; Mapping science

A small scale (1:3,000,000 or less) aeronautical chart designed for navigation on long flights and relying principally on dead reckoning and celestial navigation.

Borda scale

Earth science; Mapping science

A metallic thermometer composed of two metals having different coefficients of thermal expansion. The scale was devised by the French scientist Jean Charles Borda, who placed a strip of copper on a ...