Royal Navy Lt Cmr's wear three rings (two full with a skinny one in the middle) Royal Marines dont use naval ranks but use army ranks, so a Lt Cmr would be a Major and carry a crown on his uniform :)
commander.
Royal wedding rings are made of Welsh gold. You can buy Welsh gold for your own wedding ring too
Pretty, and expensive
Galadriel
You don't . If it runs on gasoline you can bore out the cylinder (hole) to a bigger size and put an over size piston in it or you can drive in a "cylinder sleeve" which in effect creates a new cylinder.Diesel engines are made with sleeve assemblies that include the sleeve,a piston with pin and piston rings .Sleeve assemblies can be removed and replaced as a unit.
I believe you want 'The Mulligan Spy Ring' .
Cut it in two, then count the rings.
It is a spring metal sleeve that goes over a piston to compress the rings so that the piston can be install in the motor. It tightens down on the piston, forcing the rings into the grooves in the piston then you tap it into the cylinder.
Traditionally in Royal marriages only the brides where wedding rings.
The rings are 50m long, made up of 20000 plants
It is tradition that men in the Royal Family do not wear wedding rings.
You've gotta use a compression sleeve to keep the piston rings in while depressing the piston.