Notes on Drill and Equipment for 17 Ponder mark 2 Gun on Valentine (Carrier) 17 Ponder Mark 1. Maintenance Manual for the Ordnance, Q.F. 17 Ponder, mark 1 on Carriage 17 Ponder, mark 1 and 1W and Ordnance, Q.F. 17 Ponder, Mark 5 … BSA .5 inch calibre (12.7 mm.) automatic and semi-automatic machine gun 37mm Gun, Antitank, M3 - USA Basic Field Manual, FM 23-70 Machine gun training (supplement) Browning machine gun, caliber .50, HB, M2 ground - USA Basic Field Manual, FM 23-60 Browning machine gun caliber .30, HB, M1919A4 (mounted in combat vehicles) - USA Basic Field Manual, FM 23-50 Browning machine gun, caliber .50 HB, M2 / War Department - USA Field Manual, FM 23-65 Tank training : Volume II-Part III: Pamphlet No. 1: Ordnance Q.F. 3-Pounder, 2-CWT. Marks I and II guns and ordnance Q.F. 3.7-in. Mark I Mortar Tank training : Volume II-Part III: Pamphlet No. 2: 303-in., vickers machine guns, Marks VI, IVa, IVb, and I Tank training : Volume II-Part III: Pamphlet No. 4: Machine gun mountings and appurtenances for use in armoured fighting vehicles Tank training : Volume II-Part III: Pamphlet No. 5: 5-in. vickers machine gun, Mark V