My LV aluminum straight edge is hanging on a *gasp* 2" common nail on the end of my pegboard wall. It never leaves my shop, so I never thought about making a case for it.
When I used to install built-in cabinets we carried a Stabila 6ft level to the job site. The boss asked one of the new guys in the shop to build a box for it. He went a little bit over the top and made a long skinny case in birch ply, brass hinges, latch and carrying handle. Then he rounded all the edges and applied a couple of coats of lacquer. It was a great case, but we took a lot of grief from the other trades when we showed up toting this long shiny "suitcase".
"Hey, did you bring your pool cues?" is one of the milder ones I remember.
But, precision equipment needs protection and you're wise to look after your investment. Good looking cases.
All the best,
**Now holding auditions for a catchy new signature**