Directions for the use of Anti-Aircraft Artillery Instruments Drill. Pamphlet no. 7. Predictor. 3.7 inch A.A. no. 2, Mark I; 3 inch, 20 CWT. A.A. … Handbook for the Ordnance, Q.F. 6 Ponder, 7-CWT. Mark II on Carriage 6 Ponder, Marks I, 1 A and II. Land Service. W0 796 - …