3 1 c m
40cm
actual image size: 32cm x 23cm
Description
One of six technical drawings in ink with colour washes by John Farey, prepared for the French patents covering English specifications for the electric telegraph, produced for William Fothergill Cook (1806-1879) and Charles Wheatstone (1802-1875).
Image Details
Image Ref.
10317764
© Science Museum / Science & Society Picture Library