Line frequency in the USA is actually very accurate over the long term - not with respect to atomic clocks - but the power companies do correct the line frequency.
In the suburb of Boston where we are located - you never have to correct an electrical clock between the daylight saving time changes. This of course assumes you haven't lost power - due to major snow storms etc.... If anyone is interested - this is a 1920's version of a line frequency monitor used in a power station - with a pendulum clock as the time standard. http://electricclock.omeka.net/items/show/6 Thomas D. Erb [email protected]<mailto:[email protected]> / Electric Time Company, Inc. Office: 508-359-4396 x 117 / Fax: 508-359-4482 97 West Street Medfield, MA 02052 USA www.electrictime.com<http://www.electrictime.com> [Facebook]<https://www.facebook.com/pages/Electric-Time-Company-Inc/127918073950854?ref=hl>[Twitter]<https://twitter.com/tower_clocks>[pinterest]<https://www.pinterest.com/electrictime/> [htmlsig.com]<http://www.electrictime.com/> _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
