I have recently come into posession of Mjolnir

It has runes written on four sides, like in the picture, and these runes are mirrored (written symmetrical) on other four sides. I assume, that these runes translate to "Whosoever holds this hammer, if he be worthy, shall possess the power of Thor." But I would like to know:

1. Does this writing means anything?
2. If so, in what language it is written? (Is it real or something in-marvel-universe)

I've written these runes to the paper

There four lines for "phrase" on every side. I am not sure, that I've written them right and not-mirrored, I was using this image of runes to guide me.