Gun Drill for Q.F. 17 Ponder. Mark I, on Carriage 17 Ponder, Mark I - Engeland Voorschrift 26/GS Publications/1489 WO 7118 Gun drill for Q.F. 25-Pr., Mark II gun on carriage 25-Pr., Mark I Gun Drill for Q.F. 25 Ponder. Mark 2 Gun on RAM Chassis (S.P. 25 Ponder Sexton) - Engeland Voorschrift 26/GS Publications/1532 WO 7103 Gun Drill for Q.F. 6 PR., 7-CWT. Gun on Carriage 6-PR., Marks 1, 1A, and II - Engeland Voorschrift 26/GS Publications/1148 WO 7342