The twins. A pair of nixie clocks. DSCN0458

The larger clock was made in 1994-1995. It uses the 16 button keyboard
to set it. It has an alarm and it does 12 or 24 hour modes. It uses National
NL-807 tubes for hours and minutes. NL-803 tubes for seconds.
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The smaller clock was made in 2010. It features National NL-6844A tubes.
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Larger clock has upper box made with real glass.
Smaller clock is 1/8 inch clear plexiglas bolted to inside-frame
aluminum angles 1/2 x 1/2 x 1/16. Inches. (no metric around this joint...)