Gun Drill for Q.F. 17 Ponder. Mark I, on Carriage 17 Ponder, Mark I - Engeland Voorschrift 26/GS Publications/1489 WO 7118 Supplementary Range Tables for Q.F. 25 Ponder Gun, Mark II, 1944. Smoke, Coloured Smoke and Flare Shell (B.E.Stramline). Projectiles Smoke Shell B.E., Marks 1 D-VI … Army Air Operations Pamphlet. no.4, (Chapter 3), supplement no.3. Carriage of Artillery Equipment by Air. Section 1, Q.F. 25 Ponder, Mark 2 Gun on Carriage …