Master Replicas made a blueprint of (what they called) the Attack of the Clones version of the lightsaber, and sold prints as collectibles. You could find lots of images of that one online, for instance
here. According to it, the length of the lightsaber is 10.989".
The biggest differences between MR's "AOTC" version from the original in TPM are in the small greeblies.
It is believed that MR based their blueprint and replica out of a single chromed resin-cast "stunt" prop where as the original "hero" prop(s) used for closeups in TPM was bare aluminium with real parts added to it. The TPM hero prop also has holes in the pommel cubes where as the stunt props and MR's "AOTC" saber don't.
MR later made a "Elite Edition" replica of the The Phantom Menace version with more details. You can find images of both replicas in
Rebelscum's photo archive.
You could get a red button from
Roman Props. The brass knob is a bicycle valve adapter - which you may have to file down. There is a purple bulb in the brass knob: I used an amethyst from a store that sells precious stones, I think it cost me only $5.
The three conical greeblies are LED bezels with the clear LEDs filed down.
And BTW, welcome to the forum! There are
a lot of older threads discussing this lightsaber, and many replicas have been built by several people. The search function on this board is quite good so it wouldn't be hard for you to find more info, see other people's builds, good pictures of the real thing and maybe find one or a few fan-made blueprints as well.
