40mm Bofors

Data:

Effective Horizontal range 10,800yrds (9.8 Km)

Shell HE Mk4T
Shell AP Mk6T

3.7 inch Heavy Anti Aircraft gun of 2 HAA RCA in France
(copyright Library and Archives of Cananda, photo by K.Bell)

Data:
3.7inch (9.84cm)

Effective Horizontal Range: 61,679 ft (18,8Km)

10/20rpm

Land Mattress Rocket, the only surving one, in the Canadian War Museum

Data:
Propellant Body (an R.A.F.Rocket Motor)
Diameter 3in. (7.62cm)
Weight l2 1/2lbs. (5.67 kg)
Warhead (an RN Warhead)
Diameter 5 in. (12.7cm)
weight 29lbs.( 13.1kg)

Range 4000-8000 yards (4-8 km)