reciprocal laying

reciprocal laying

[ri′sip·rə·kəl ′lā·iŋ]
(ordnance)
Method of making the planes of fire of two guns parallel by pointing the guns in parallel direction; in reciprocal laying, the two guns sight on each other, then swing out through supplementary angles to produce equal deflections from the base line connecting the two pieces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.