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Anonymous Fri Nov 9 17:14:07 2018 No.13827645 [View]
File: 1.53 MB, 4032x3024, 20180323_195116-4032x3024.jpg [View same] [iqdb] [saucenao] [google]

>>13827631
There are tons of cosmotron models. In my view the best ones are the 7803A and the 5800. The 7803A has a gravity-operated day/date quickset, a 36k balance, and a zero-reset function that can also zero the minute hand. The 5800 has a 43,200vph balance, one of the fastest hairspring-regulated wristwatches in history.

Sweephand's blog has a good writeup of the whole line.
https://sweep-hand.org/the-x8-cosmotron/

Cosmotrons are pretty cheap on yahoo JP.

>>	Anonymous Thu Oct 18 15:42:40 2018 No.13772504 [View] File: 1.53 MB, 4032x3024, 20180323_195116-4032x3024.jpg [View same] [iqdb] [saucenao] [google] >>13772495 My timegrapher reads the rate of a cosmotron fine, even if it can't read the beat error or amplitude.

>>	Anonymous Thu Jul 19 22:26:22 2018 No.13530539 [View] File: 1.53 MB, 4032x3024, 20180323_195116-4032x3024.jpg [View same] [iqdb] [saucenao] [google] >>13530534 T-thanks anon

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