4 ms·

https://www.bbc.co.uk/programmes/m0024x0g https://www.bbc.co.uk/programmes/m0024x0g Up to date and with a very good discussion of the 254:19 gearing. Also muc

by sgt101 2y ago

https://www.bbc.co.uk/programmes/m0024x0g https://www.bbc.co.uk/programmes/m0024x0g Up to date and with a very good discussion of the 254:19 gearing. Also much more detail on the history of the mechanism.