I recently bought a house built circa 1970 in France, and it came with an automatic watering system (date of setup unknown, so any time between then and now), controlled by this:
I've been unable to find any kind of instructions on how to operate the triple cogs systems on the web, searching for "flash" or "flask" (whatever that brand is) doesn't yield anything.
Would anyone know (ideally) what's this model so that I can find instructions, or at least have an idea on how to operate the cogs?

The the 2 red pointers per dial are the current time, there are 3 red pointers and 3 gray pointers I would set the grey pointers on the time you want the sprinklers to come on.
