Русский 
English Cannon
Or read this in Russian
This is my husband’s project – a cannon. 🙂
He found a couple of descriptions of caliber/length ratio as well as few images of carriages and the overall scale is 1:24 as far as he remembers.
The cannon was made on a metal lathe out of a brass rod, the carriage is made of beech and coated with brass sheet.
The were two most hardest parts – the wheels and elevation mechanism (no idea what’s the right word for it). That elevation mechanism (which is under the back side of the cannon) really works.
В общей сложности, работа заняла неделю.
While making making the wheels he made a couple of jigs which I’ll write about tomorrow.