9600bps-5V Ready-GPS Receiver Module for NIXIE clock/ARDUINO/CAR/DIY-3.5mm plug | eBay
Elektor New Precise Nixie Clock Revisited | Elektor Magazine
NixiChron- Satellite controlled Nixie tube Clock
IN-14 Arduino Shield Nixie Tubes Clock in a Clear Acrylic Case [RGB, USB, Musical] [with Columns and Sockets] [Temp. sensor, GPS time sync., IR Remote] – GRA & AFCH
NIXT CLOCK - IN14 NIXIE TUBE CLOCK With GPS Temp from NIXT CLOCK on Tindie
Nixie Tube Clock – Dr. Scott M. Baker
in-14 nixie tube clock wood enclosure gps alarm and adapter 6-tubes – buy from e-shop Millclock: price, reviews, photos, specs
9600bps-5V Ready-GPS Receiver Module for NIXIE clock/ARDUINO/CAR/DIY-3.5mm plug | eBay