INSTRUCTIONS FOR THE USE OF
BOMB SIGHT, MARK I
EDITED AT THE
ARMY WAR COLLEGE
GOVERNMENT PRINTING OFFICE
Office of The Adjutant General
Washington, January 28, 1918.
The following pamphlet, entitled "Description and Instructions
fortheUse ofBomb Sight, MarkI, is published forthe information
(A.G. O. 062.1.)
order of the Secretary of War.
Major General, Acting Chief of Staff.
h. p. McCain,
The Adjutant General.
TABLE OP CONTENTS.
Bombsight, Mark I:
Description of the sight
(a) The frame.
(b) The upper slide
(c) The lower slide
Care of the sight
Operation of the sight
BOMB SIGHT, MARK I.
DESCRIPTION OF THE SIGHT.
The bomb; sight, Mark I,is a simple practice sight, especially
designed for instruction purposes at aviation and bombing schools.
Its use is limited to low altitudes, as itis not considered accurate
above 4,000 feet, and should be employed only withrelease mech
anisms in which the bombs are suspended vertically.
The sight consists of the followingmajor parts:
(a) The frame.
•| (6) The upper slide.
(c) The lower slide.
(«) The Frame
The frame, to which are attached the upper and lower slides, is
composed of the baseboard (A), the bracket bearing (C), the bracket
knuckle (X), the bracket (B), and the fastening and clamping:
The baseboard (A), which is the body of the sight, is of wood, 16
inches long, 7^ inches wide, and % of an inch thick, witha trian
gular piece 8 inches long and 4J^ inches wide, cut away at the upper
frontcorner. The upper rear corner is traversed by a slot 5% inches
long and %of an inch wide to receive the upper slide. Arecess
6% inches long and % of an inch wide is cut around this slot to a
depth of -fi of an inch fro