DescriptionFlywheel of the Boulton-Watt steam engine (4803665199).jpg
The flywheel is around 4 metres in diameter, fabricated from (I am guessing) cast iron pieces rivetted together. The scale can be seen in comparison with the stairs on the left.
This particular engine was installed in Whitbread's brewery in 1785, and clocked up 102 years' work.
More about it here: www.powerhousemuseum.com/collection/database/?irn=7177
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue