This is a case designed for the Tom Titor model of Divergence Meter (a device described in the Steins;Gate anime).
The “clock” itself it built according the the schematics and code laid out on Tom Titor's site [1], but rather than fabricate the case out of sheet metal, I opted to model it based on the their designs so that it matched them perfectly.
I plan to paint mine a matte grey to match the expected aluminum finish.

[1] http://brotoro.com/dm/index.html

Paint a matte silver to match anime.