Screw driver sizes

[WA123231]

Hello, can someone please give me some info on the screw driver sizes for the below Favre-Leuba watch. More specifically what is the smallest size (I.e. .x mm) I would need. Thank you.

[LittleWatchShop]

You need these (on sale!!) and probably one size larger for the crown wheel and ratchet wheel.

https://www.esslinger.com/bergeon-set-of-five-swiss-watchmakers-screwdrivers-in-pouch/

[WA123231]

1 hour ago, LittleWatchShop said:

You need these (on sale!!) and probably one size larger for the crown wheel and ratchet wheel.

https://www.esslinger.com/bergeon-set-of-five-swiss-watchmakers-screwdrivers-in-pouch/

Hi Thanks. So just to confirm I should be going as low as .5 mm?

[LittleWatchShop]

3 minutes ago, WA123231 said:

Hi Thanks. So just to confirm I should be going as low as .5 mm?

Why not?  You will not use it often, but if you remove a hairspring stud I think it will be useful.

[WA123231]

4 minutes ago, LittleWatchShop said:

Why not?  You will not use it often, but if you remove a hairspring stud I think it will be useful.

Okay. Thank you.

[JohnC]

Yeah just get a set. Eventually they all get used. I have a Horotec set of 10 and it has covered all eventualities.

[jdm]

7 hours ago, WA123231 said:

Hello, can someone please give me some info on the screw driver sizes for the below Favre-Leuba watch.

As mentioned in another topic, that is actually an FHF movement.

Be aware that if you are going to replace the mainspring you will need more than just screwdrivers. 

Regarding these, sizes are standard, as noted the 0.5mm has limited use especially for a beginner, so it makes sense that is not always included in sets.

What a beginner should care first is to learn how to properly dress the blade, and avoid overspending. Have a read of our pinned topic.