You're viewing this item in the new Europeana website. View this item in the original Europeana.

Telegraphic Mouse Mill Motor

SIR WILLIAM THOMSON'S MOUSE MILL MOTOR TELEGRAPHIC PATENTED 1871 (engraved on a makers trade plate). N. 9 (engraved on the base of the instrument). 1-10 (each number engraved on the ten blades of the rotor). 4 (engraved on every blade of the rotor). 1.3 Ohms at 63 [degrees] Faht (engraved on the casing base). 1-10 (stencilled in white paint, now largely removed by abrasion, onto the ebonite insula…