Good afternoon OF,

I am wondering if hands on cal 285 will fit on a cal287? Are the centre wheel pinion the same size?

I am hoping experience members/watchmakers can chime in on this for me. I have searched around but I could not find any answers.

Thanks for your time.

 

285 is 14" movement and 287 is 15" movement.
Hands for both calibers have the same hole size.
115/180/28/24/24.

 

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Omega_285

Very helpful website for checking the mainspring reference and hands for instance