The magnetic nano is placed on the Severn Tunnel Pumping Engine.
This pump was made in 1879 by Harvey and Co of Hayle, Cornwall.
The Pump mechanism is 30 feet long and weighs 20 tons .
There is free admission and the museum is open Tuesday - Sunday 10am - 5pm (Last admission 4.40pm)
Closed Mondays except Bank Holiday Mondays.