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

Galactic coordinate system

Earth science; Mapping science

A coordinate system with two intersecting, orthogonal axes one of which (the x-axis) lies in the galactic plane and the other (the z-axis) is perpendicular thereto. One coordinate (called galactic ...

Land surveying course

Earth science; Mapping science

(1) In general, the bearing of a line. (2) In law, the direction of a line run with a compass or transit and referred to a meridian.

Control survey classification

Earth science; Mapping science

A system by which control surveys are labelled to indicate their approximate precision or accuracy. The highest prescribed order of control survey, in the USA, is designated first order; the next ...

Geocentric datum

Earth science; Mapping science

Any datum in which the Earth's centre of mass is involved in specifying the coordinate system. The centre may be involved directly, e.g. by specifying that the origin of the coordinate system be at ...

Cord

Earth science; Mapping science

A measure of volume defined legally, in the United States of America, as a pile or stack equivalent to 128 cubic feet of wood and air-space (3,625 cu. M. ) closely ranked, usually 8 feet long, 4 feet ...

Construction levelling instrument

Earth science; Mapping science

A particularly sturdy levelling - instrument sufficiently accurate for levelling over short distances such as those involved in construction of roads, buildings, etc.