On 3 February 2016 at 19:41, Tim Shoppa <tsho...@gmail.com> wrote: > Very interesting! Hazarding a guess.... higher end of a NT-cut? Looks much > like the third from the right here: > http://www.pbgquartz.com/www.pbgquartz.com/images/foto1.jpg
I have a GEC 1Kc/s crystal that looks like the third from right. It's a massive slab of quartz - I occasionally wonder about spinning it up to see if the motion's detectable with a bit of crude interferometry, but I have no idea about permitted drive levels and don't want to damage it. It's hard to imagine it would be stable or time-nuts-worthy, but hints would be welcome. Steve _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.