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Oblique Mercator

Name Oblique Mercator
Model Cylindrical
Type Conformal
Meridians Complex curves concave towards line of tangency (except +/– 180)
Parallels Complex curves concave towards the nearest pole
Spacing Meridian Increases away from the line of tangency
Spacing Parallels Increases away from the line of tangency
Linear Scale True along line of tangency OR

Two lines equidistant from and parallel to the line of tangency

Specialties Cylinder is tangent to a great circle (but not meridian or equator)

Shape is true only with any small area

Enlargement of area increases away from line of tangency

Uses North & South America on a single map

Satellite mapping

Reasonably accurate within 15 band along line of tangency

Navigation strip charts