19 Feb
2007
19 Feb
'07
8:01 p.m.
On 19 Feb 2007 at 22:32, Kevin Schoedel wrote:
Before there were quartz crystal oscillators in
watches, Bulova developed
and sold watches with 360Hz tuning fork oscillators.
...and before that, there were electric watches that used a
conventional balance wheel as the timing reference.
Cheers,
Chuck