Good Sunday morning to ALL - Have a Curiosity to look at:
This is the real tachometer from the Steam ship Town off Zürich.
When the ship was modernized I could save the trip counter from scrapping.
It has been cut out from the sheet metal wall.
The friction wheel touched the crankshaft and indicated the number of revolutions. I use a small electric motor with a gearbox to drive it.
Enjoy, Arnold