This projects represents a first for me in that I have taken an existing enclosure and made it into a fully functional Nixie clock. The process was relatively simple (compared to building a case from scratch) in that the majority of the work was already done. The enclosure was originally designed as a display unit using NL8091 Nixie tubes for the AN/GSQ-53 government issue Time Frequency generator from the1960’s. So, I added the  electronics to drive the tubes. new wiring harnesses for the sockets, drilled a few holes here and there, spruced it up a bit and there ya’ go..self sufficient a nixie clock that in its former life was just a slave display.  I also added NE-2 colons and an AM/PM indicator as well and relocated the 1PPS sync LED to the front for a little added interest. The electronics used are once again Jeff Thomas’ extricated from a NixiChron originally designed to drive IN-18’s. I souped up/down the Anode resistors a bit per the NL8091 spec and voila, a fully functional Nixie clock. This is the first of 3/maybe 4 of these I will be building and the next 2 will be a little less reserved, shall we say.