Non-revenue-producing (Was: cctech Digest, Vol 96, Issue 5

I'm intersted in just about all timekeeping deviuces from sundials ot atomic clocks -- with one exception. I don't have much interst in modern electrronic clock projects that consist of a programmed microcontroller and a display. I know microcontrollers cna do that... Mechanicla clocks interest me a lot, and always have. Alas I cna't afford the things I'd really like to work on, but ther are plenty of 20th century clocks around for a few pounds htat I can have fun getting to run again. Other things that interest me (and I can obtain) include older synchonous-motor clocks, elctrically-rewound spring-driven clocks, electorncially-maintaind balance-wheel clocks (normally just a single germanium trransitor triggeredby one winding on the balanace and energising a second winding. Older eleectornci clocks, before everything went into 1 chip are also of interest, I have an HP59309 (of course!). I'd like to find a Rb standard [1] one day... [1] Yes, I realise that a Cs beam is a primary standard, but the tubes in said units have a finite life by design (the Cx is being used up all the time). The Rb tube opeates on a ratehr different principle and lasts a lot longer. THus it's more practical for me. -tony