Identification list for ordnance, B.L. 5.5-in., Mark 3 and ordnance, B.L. 4.5.-in., Mark 2 on carriage, 5.5-in. or 4.5-in. gun, Mark 2 Identification list for ordnance, B.L. 5.5-inch, Mark III and ordnance, B.L. 4.5.-inch mark II on carriage, 5.5-inch or 4.5-inch gun, mark I Gun Drill for B.L. 4.5-inch, Mark 2 Gun on Carriage 5.5-inch or 4.5-inch, Marks 1 and 2 and B.L. 5.5-inch, Mark 3 Gun on Carriage …