


Nobili's metallic tints (metallochrome)
pre-1919

Steam locomotive No. 1 'Locomotion', Stockton & Darlington Railway
1825

Motor starting switch resistances in sand box

One of Wheatstone's electromagnetic engines, 1841
1841

Frequency indicator vibrating reed meter
1907-1917

instrument to measure maximum demand and record during a period

Electro-motor invented by P.H. Desvignes in 1843
1843

Map case, British, 1921-1940
1921-1940
Giant glass lens made by Pilkington Special Glass Limited, 1989
1989