This is a land based twin 40mm Bofors I scratched made a couple of years ago.Iv Made a few changes to it.Copied from pictures,not sure of the scale.Full elevations is 7.5 inches high.Made from wood.
Scratch built 40mm Bofor gun.Copied the dimensions from the 1/72 Airfix kit which in my opinion is a very good detailed kit,making mine a 1/18 scale.(4 times bigger).