You just need one of these analog master clocks. The pointer reads zero if pendulum time is equal to line frequency time. I assume mathematically it integrates the difference over time.
https://electricclock.omeka.net/items/show/6 Thomas D. Erb www.electrictime.com _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
