plane tableplane table
a surveying device for plotting maps in the field: it consists of a drawing board mounted on a tripod with an alidade that can be moved about over the table to establish a reference point
A portable surveying instrument consisting essentially of a drawing board and a ruler mounted on a tripod and used to sight and map topographical details.
(plural plane tables)
- (cartography) A particular kind of instrument used by surveyors in mapmaking.