[time-nuts] PIX of some vintage Rubidium optical units

[cdelect at juno.com]

While sorting some stuff for a new project took a PIX of these vintage
classic Rubidium optical units.

Top is the Varian V4700 (first commercial Rubidium Standard.
Middle left is the Varian R-20
Middle right is the Tracor 304D/308A
And last but definitely not least the HP 5065A

Cheers,

Corby
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