[Plans (2) of mounting for 13 1/2 inch 68 ton B.L. guns for HMS 'Hood' / Sir W.G. Armstrong, Whitworth & Co. Ltd. 1920 Oct 28. 2 sheets (on roll with others), (photo-reproduced?) line drawings, scale 1 : 12. Comprise general arrangements (2): plan, and sectional elevation] Plans (2) of mounting for 13 1/2 inch 68 ton B.L. guns for HMS 'Hood' 1920