- The technical details can be found on ETA’s website on the pages of the 6497-1, 6497-2, 6498-1, and 6498-2.
- ETA’s training tool has a page for the movement that takes you step by step through the disassembly.
- Additional information is available on Worn & Wound’s page devoted to the movement.
- The Caliber Corner page compares the 6497 to the 6498.
The 6497 and 6498 were designed as pocket watch movements and are therefore quite large. Their size makes them easier to manipulate, which is why they are often used to train watchmakers.
The difference between the two movements is the location of the small seconds, at 6 on the 6498 and 9 on the 6497 (or 3 and 6 in a pocket watch with the crown at the top). There is also a difference in the gear train as in the 6497 the fourth wheel is above the third wheel, whereas in the 6498 it is underneath.
