Seiko Sumo beating

How can you check a mechanical watch's frecuency?
1. Take a hi-resulution photo with 1 second open sutther.
2. Count the number of tracks left by the needle in that time.
Uhmm... 21600 cicles per hour is ok, and it's so orange...

1 comment:

The Old Charming Lady said...

Gracias por la lección teórica pero en la práctica luce de lo más naranja, indeed! ;-)