Britain had successful tested a new HAA gun, 3.6-inch, in 1918. In 1928 3.7-inch became the preferred solution, but it took 6 years to gain funding. Production of the QF 3.7-inch (94 mm) began in 1937; this gun was used both on mobile carriages with the field army and transportable guns on fixed mountings for static positions. At the same time the Royal Navy adopted a new 4.5-inch (114 mm) gun in a twin turret, which the army adopted in simplified single-gun mountings for static positions, mostly around ports where naval ammunition was available. However, the performance of both 3.7 and 4.5-in guns was limited by their standard fuse No 199, with a 30-second running time, although a new mechanical time fuse giving 43 seconds was nearing readiness. In 1939 a Machine Fuse Setter was introduced to eliminate manual fuse setting.
Britain had successful tested a new HAA gun , 3.6-inch , in 1918 . In 1928 3.7-inch became the preferred solution , but it took 6 years to gain funding . Production of the QF 3.7-inch ( 94 mm ) began in 1937 ; this gun was used both on mobile carriages with the field army and transportable guns on fixed mountings for static positions . At the same time the Royal Navy adopted a new 4.5-inch ( 114 mm ) gun in a twin turret , which the army adopted in simplified single - gun mountings for static positions , mostly around ports where naval ammunition was available . However , the performance of both 3.7 and 4.5-in guns was limited by their standard fuse No 199 , with a 30-second running time , although a new mechanical time fuse giving 43 seconds was nearing readiness . In 1939 a Machine Fuse Setter was introduced to eliminate manual fuse setting .
What was introduced in 1939?
What was introduced in 1939 ?
Machine Fuse Setter
Machine Fuse Setter