pipper

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pipper

[′pip·ər]
(optics)
A small hole in the reticle of an optical sight or computing sight.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

pipper

pipper
The aiming mark on a gun sight, bombsight, or HUD (head-up display). It is the central point of the graticule that is put onto the target and is normally about 2 milliradians (mil) in diameter.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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