Hello I just stumbled across this: https://www.muquans.com/index.php/products/mclock
A commercially available cold atom rubidium clock! My apologies if this has already been reported on the list. Ole _______________________________________________ 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.