Anti-Aircraft Fire Control System [Kerrison Predictor]
Object detail
Accession number
2015.27
Production period
Description
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.
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.
Marks
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 Maker's Plate
PREDICTOR A.A. No 3 MK I // A.R. & Co // 1942 // REG. No 7759 // OS-5-GA Maker's Mark
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 Maker's Plate
PREDICTOR A.A. No 3 MK I // A.R. & Co // 1942 // REG. No 7759 // OS-5-GA Maker's Mark
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 Maker's Plate
Media/Materials
Credit Line
Anti-Aircraft Fire Control System [Kerrison Predictor], 2015.27. The Museum of Transport and Technology (MOTAT).
Public comments
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- MOTAT Curatorial Research posted 3 years ago.
I have the 350cc Douglas electric generating set that is the power pack for this unit, also out of reserve storage. 1200va/350w. Wd No B4279A
- Steve posted 3 years ago.
Came from Valintines surplus store in Hamilton approx 1970. part of the 3.7 anti aircraft unit along with Matador Gun Tactor 3,7 gun and BTH moblie radar unit.
- Greg Pittams posted 4 years ago.