National 3000 automatic bookkeeping calculating machine
1935-1945
Steam locomotive No. 1 'Locomotion', Stockton & Darlington Railway
1825
Milton Roy kidney machine used for home dialysis
1961-1971
Frequency indicator vibrating reed meter
1907-1917
One of Wheatstone's electromagnetic engines, 1841
1841
Edison cut-out and bolt switch
Nobili's metallic tints (metallochrome)
pre-1919
Motor starting switch resistances in sand box
Map case, British, 1921-1940
1921-1940
Rotary Transformer Type "U"
Rotor, commutator and brush holder from electric motor
instrument to measure maximum demand and record during a period
Electro-motor invented by P.H. Desvignes in 1843
1843
Milton Roy kidney machine used for home dialysis
1961-1971
Giant glass lens made by Pilkington Special Glass Limited, 1989
1989
Milton Roy kidney machine used for home dialysis
1961-1971