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

Circle of uncertainty

Earth science; Mapping science

A circle having as its centre a point whose location has been determined and as its radius the probable error of the location.

Compilation scale

Earth science; Mapping science

The scale at which a map is compiled, as distinct from the expressed scale of the map.

Chainman

Earth science; Mapping science

The person who marks the locations of the tape's ends in measuring distance with a graduated tape.

Caging

Earth science; Mapping science

Orienting and mechanically locking the rotational axis of a gyroscope to an internal reference-position.

Bathymetric chart

Earth science; Mapping science

A topographic map of the bed of the ocean or other body of water. Bathymetric charts usually indicate depths by contour lines, with meaningfully tinted zones between curves. They are designed ...

Clock star

Earth science; Mapping science

One of a set of certain selected stars, in the vicinity of the celestial equator, whose right ascensions are accurately known and which are used for the exact determination of longitude or of time.

Bubble axis

Earth science; Mapping science

The horizontal line tangent to the upper surface of the centred bubble, in a spirit level, which lies in the vertical plane through the longitudinal axis of the vial.