Look at (Singer) Gertsch Frequency Meter. This was standard measuring equipment in our (spectroscopy) lab in 1975. Mike
-----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of Neville Michie Sent: Sunday, February 12, 2017 05:20 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Vintage Frequency Measurement Back in the early sixties I worked in a lab adjusting filters for line transmission. We had numerous oscillators, built to be boat anchors, and CROs set up for X-Y display. The lab had 100hz, 1kHz, 10kHz standards wired in. We were expert at recognising lisajou figures. We might have several oscillators running together, and we could establish almost any frequency with precision. Calibting an oscillator would not have been difficult. Cheers, Neville Michie > On 12 Feb 2017, at 5:08 PM, Scott Stobbe <[email protected]> wrote: > > I was inspired recently coming across a Lampkin 105 frequency meter, > as to how frequency measurement was done before counters. > > Certainly zero-beating a dial calibrated oscillator, would be one approach. > > Is there a standout methodology or instrument predating counters? > _______________________________________________ > 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. _______________________________________________ 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. _______________________________________________ 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.
