[Spridgets] Fractional Vernier Caliper

[David Lieb]

> Okay, I jest about the keeping in the fridge and subsquent parts, but that
> calculator is still running on the same battery.

As opposed to the Keystone 4-function electronic calculator my father
paid $125 for in 1972 just before someone came out with memory? It ran
on four AA cells, but was not noted for battery life... The rest of
the unit did hold up well, however.
David L