fire-control quadrant

fire-control quadrant

[′fīr kən‚trōl ‚kwäd·rənt]
(ordnance)
A chemical device with a scale to measure angles and a leveling adjustment, used to measure the elevation angles of a weapon for obtaining the horizontal range of a weapon; it is attached to the gun, gun mount, or gun carriage.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.