Anti-Aircraft Fire Control System [Kerrison Predictor]; 2015.27


Anti-Aircraft Fire Control System [Kerrison Predictor]

About this object

Large green crate with rope handles on two ends at those ends are also metal loops possibly for transporting , inside crate is a metal box shaped object with metal tubes at base, metal crank wheel on the side and four metal frame arms with loops and pins, circular glass covered holes and dials, one large dial with arrow to measure in yards reads 'ORD. Q. F. 40 mm MKI // PROS.H.E. MK I.T. // M.V. 2750 F/S (1/2 WORN GUN) // LAG CORRECTION 0.07 SECS // T.E.SETTING 0.058 INCHES', metal plate on side reads 'PREDICTOR A.A. No 3 MK I // A.R. & Co // 1942 // REG. No 7759 // OS-5-GA'
Top of object is open exposing inner components which includes four motors plate on one motor reads 'O.S.800 A // MOTOR 1/40 B.H.P. // MK.1.A. // 50 VOLTS 50 // 3 PHASE // 2500/2750 R.P.M. // B.U.Z. [?]1508 // 1942' and various cogs leading to dials, loose lens like object.


H 930 L 920 W 1220mm (H 36 5/8 L 36 1/4 W 48 1/16")

Subject and Association Keywords




Credit Line

The Museum of Transport and Technology (MOTAT)

Object Type

Armament Accessories/Armaments/05 Tools & Equipment for Science & Technology/Nomenclature

Object number


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