Code: P27183-114
Issued by the Air Ministry. 21 x 28cm, 8p, August 1944 with November 1944 print date. Marked "Restricted (For Official Use Only)'. Describes the Vector principle with reference to the Mk.IX bomb sight and deals with the manner in which the T.1 solves the problem. Illustrated. Light soiling but generally good. Stock code P27183-114.
