There are different types of "3-inch" guns.
* US 3-inch field gun of 1902, 1904, 1905
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3 inch Gun M5 — Infobox Weapon name=3 inch Gun M5 caption=M5 on carriage M6 on display at Fort Sam Houston, Texas. origin=USA type=anti tank gun is ranged= is bladed= is explosive= is artillery=yes is vehicle= is UK= service=1943 used by=US Army wars=WWII… … Wikipedia
3 inch Gun M5 — Un M5 exposé à Fort Sam Houston, au Texas. Présentation Pays … Wikipédia en Français
8 inch Gun M1 — Infobox Weapon name=8 inch Gun M 1 caption=8 inch Gun at the U.S. Army Field Artillery Museum, Ft. Sill, OK origin=USA type=heavy gun is ranged= is bladed= is explosive= is artillery=yes is vehicle= is UK= service= used by=flag|USA flag|UK… … Wikipedia
5-inch gun — A 5 inch gun can mean these naval weapons:* … Wikipedia
BL 6 inch gun Mk II — VI Allgemeine Angaben Mil … Deutsch Wikipedia
QF 4.7 inch Gun Mk I - IV — Infobox Weapon name=QF 4.7 inch Gun Mk I IV caption=Typical deck mounting, 1890s origin= UK type=Naval gun Medium field gun Coast defence gun is artillery=yes is ranged=yes is explosive=yes is UK=yes service=1887 1918 used by=Naval: UK ITA JPN… … Wikipedia
BL 6 inch gun Mk III IV VI — Infobox Weapon name= Ordnance BL 6 inch gun Mk III, IV, VI caption= origin= United Kingdom type= Naval gun Coast defence gun is ranged=YES is bladed= is explosive= is artillery=YES is vehicle= is UK=YES service=1880s 19?? used by=Royal Navy wars … Wikipedia
BL 6 inch gun Mk V — Allgemeine Angaben Militärische Bezeichnung … Deutsch Wikipedia
4.5 inch Gun M1 — Infobox Weapon name=4.5 inch Gun M1 on Carriage M1 caption=4.5 inch Gun M1 at the U.S. Army Field Artillery Museum, Ft. Sill, OK. origin=USA type=field gun is ranged= is bladed= is explosive= is artillery=yes is vehicle= is UK= service=1942 1945… … Wikipedia
BL 8-inch-gun Mk I — – VII naval gun BL 8 inch Mk VII in Devonport NZ … Deutsch Wikipedia
BL 10-inch-gun Mk I — – IV Allgemeine Angaben Militäris … Deutsch Wikipedia
