Nice one, should clean up well. I like the double mounts for the tool rests something I wish mine had. Looks like it could use a elephant foot replacement on the mounting screw or a plate for the underside of wherever you mount it.
I've always got a few of these (150mm, 6" rule) sitting in my apron next to a mechanical pencil. Easy to read and fits nicel in the pocket. I'll need to get a mini combo square though. They look handy.
Another accessory which has become useful is Siri. I can ask my phone to convert between imperial and metric measurements and most of the time it happens flawlessly.