plain-table

plain table

noun Surveying.
Dictionary.com Unabridged

plane table

noun Surveying.
a drawing board mounted on a tripod, used in the field, with an alidade, for surveying tracts of land.
Also, plain table.


Origin:
1600–10

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
plane table
 
n
1.  a surveying instrument consisting of a drawing board mounted on adjustable legs, and used in the field for plotting measurements directly
 
vb
2.  to survey (a plot of land) using a plane table

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