Case for NTP Clock by W8BH

Another! case for a Ham Radio related project. NTP Clock by W8BH. See: http://w8bh.net & http://w8bh.net/NTP_DualClock.pdf

A friend of mine - Richard VK2ARH supplied a nice set of boards for the faceplate and back, I decided to create a case for the clock and use the supplied faceplate.
The gerber files for the faceplate are available on Richards github page here: https://github.com/VK2ARH/NTP-Clock

The case evolved over an afternoon and evening and I tried to cover the following requirements:
1. Openings for a switch and DC barrel connector.
2. Drop-in installation of the NTP Clock and rear holes to secure the 4 standoffs into the case.
3. Lots of holes for airflow and convection by adding 2 small "rail" feet to elevate and tilt the box slightly.

I have not countersunk the rear screws as I would normally, as I wanted to maintain a small air gap if the case is laid on its back. (I will find a set of black screws to match the case though!)

I will refine the design if and as req