plotting board

noun

1. Navigation. a transparent table on a ship, used as a plotting sheet.
2. Military. a device based on a map or other scale representation of a region against which artillery fire is to be directed, for use in directing artillery fire against a fixed or moving target.

Word History and Origins

Origin of plotting board¹

First recorded in 1900–05

Example Sentences

These figures show by steps the "evolution of the Plotting Board."

From Project Gutenberg

He handed Rip the shoulder case that contained the plotting board.

From Project Gutenberg