Investigation of Operation of Cookers, Portable, No.III, Mk.II and No. I (Hydra Type).* 14 Aug 44, from Capt, W.M.Campbell M.E.3.(b). to M.E.3 CMHQ
See the full document attached.* It includes a sketch of the modification detailed in Army Council Instructions, 24 November 1943; 1725 Equipment - Cookers, Portable, Nos. 2 and 3 - Improved Modification for Burning Leaded Petrol.
While this report is on the Cookers, Portable No. 3, the burner assemblies on the Nos 2 and 3 are identical aside from the length of the vaporizer tube.
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