GeoGraph - photograph every grid square

Bolton Steam Museum

This is the country's only erected example of a beam engine that has been McNaughted. McNaught's 1845 patent was for a technique of doubling the power of an existing single cylinder beam engine by adding a new high pressure cylinder between the crank and beam centre and using the original cylinder as a low pressure cylinder. This is all visible in the photograph. The engine came from Cellarsclough Mill, Marsden.