http://www.sciencemuseum.org.uk/wallaceandgromit
Science Museum curator John Liffen introduces 'Animal air tester'. For many years small animals usually, mouse or bird were used to test the atmosphere of a mine after an explosion. This air tester was designed to revive them.
http://www.sciencemuseum.org.uk/wallaceandgromit
im going there in half term
Iegobountyhunter 2 years ago