Part numbers: Omega GF 620 spare parts catalogue. Numbers stamped on the parts are teaching labels; real 565 parts are not marked with them. Parts are drawn for teaching from the 565 film drawings, not to scale. Order and screws: Omega Technical Guide No. 13 (551) and TG-19-C-097 (565). Hands and dial come off before the bench starts; they vary by model. Right-drag or two fingers to look around. T shows the tray. F is full screen.

THE BENCH

A full service on a vintage Omega calibre 565, from dial off: dial side, automatic device and movement side come apart into three trays, then it all goes back, last out first in. Every part with its number. A virtual service before you open your own.

Learn shows every part, tool and number. Practise asks you to name the next part before it moves. Rounds after the first are Practise. Numbers stamped on the parts are teaching labels, not factory marks.