Cartographers and Photogrammetrists

Compile data required for map preparation, including aerial photographs, survey notes, records, reports, and original maps.

Delineate aerial photographic detail, such as control points, hydrography, topography, and cultural features, using precision stereoplotting apparatus or drafting instruments.

Prepare and alter trace maps, charts, tables, detailed drawings, and three-dimensional optical models of terrain using stereoscopic plotting and computer graphics equipment.

Study legal records to establish boundaries of local, national, and international properties.

Inspect final compositions to ensure completeness and accuracy.

Revise existing maps and charts, making all necessary corrections and adjustments.

Identify, scale, and orient geodetic points, elevations, and other planimetric or topographic features, applying standard mathematical formulas.

Collect information about specific features of the Earth, using aerial photography and other digital remote sensing techniques.

Examine and analyze data from ground surveys, reports, aerial photographs, and satellite images to prepare topographic maps, aerial-photograph mosaics, and related charts.

Determine guidelines that specify which source material is acceptable for use.

Build and update digital databases.

Determine map content and layout, as well as production specifications such as scale, size, projection, and colors, and direct production to ensure that specifications are followed.

Select aerial photographic and remote sensing techniques and plotting equipment needed to meet required standards of accuracy.

Travel over photographed areas to observe, identify, record, and verify all relevant features.

Estimate resources, such as production hours, required for projects.