Next message: Henry C. Halboth: "Re: Timing Lunars with a Rock"
There is also a time-tested device called sandglass:-)
As I understand sandglasses was used on the ships
together with a log to measure the speed.
(And to measure the time in general, in Columbus times).
I suppose a sandglass has at least the same precision
as a crude pendulum discussed above.
Alex.
On Mon, 18 Jul 2005, Henry C. Halboth wrote:
> With a little practice, counting "and 1 - and 2 - and 3, etc." will
> really serve the same purpose. Before I could afford a stop watch the
> time between sight and chronometer reading was often accounted for in
> this manner. Not very precise sounding, but it really does the trick.
>
> Henry
>
