Divergence Meter Software for PIC processors from Tom Titor and Keith Moore
See the build site http://brotoro.com/dm/ for details. Boards are available from Keith at http://www.tindie.com/stores/nixiekeith or directly via https://www.tindie.com/products/nixiekeith/nixie-divergence-meter-from-tom-titor-in-14-nixies/
Divergence Meter cases are in formats for laser cut or for 3DP. These cases should work for the Tom Titor designed builds.