Seiko Ersatzteil – Drittrad (三番車 / Third Wheel) für Seiko 90 Stoppuhr (Kal. 9011‑Familie), Ø ca. 11,7 mm (1 Stück) – NOS Taucheruhr circumferential seconds scale

circumferential seconds scale

especially train conductors

and technically reliable

5 mm (measured)

Seiko Ersatzteil – Drittrad (三番車 / Third Wheel) für Seiko 90 Stoppuhr (Kal. 9011‑Familie), Ø ca. 11,7 mm (1 Stück) – NOS Taucheruhr circumferential seconds scaleOriginal Seiko spare part Third Wheel () from new old stock (NOS) for the Seiko "90" stopwatch (caliber family 9011). A single piece is offered in the original Seiko part bag. Outer diameter: approx. 11. 7 mm an unusually large measurement for a wristwatch movement, which fits well with the large format stopwatch movement. The third wheel is a component of the going train and transmits power between the center wheel and the second wheel; it shows the