Keywords: 240mmBombTypeTModel1916.jpg See also 24/31 P R Model 1916 1/10 second delay action fuze March 1918 Bomb dimensions Nomenclature December 1917 240 mm Trench Mortar Cross-sectional view showing dimensions and filling of 240 mm 9 45 inch Trench Mortar bomb as adopted by the US Army Based on Figure 7 in Manual for Trench Artillery United States Army provisional Part IV 240 mm Trench Mortar prepared at Headquarters American Expeditionary Forces France March 1918 <br>http //cgsc cdmhost com/u /p4013coll9 252 2007-09-07 Rcbutcher PD-USGov 240 mm Trench Mortar World War I mortar ammunition 240 mm |