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Polar clock (Wheatstone type) by J. Soleil

Polar clock (Wheatstone type) by J. Soleil

1845-1855
Sinclair line selector step-by-step sending instrument, patented by David Sinclair, probably made by the National Telephone Company, British, 1880-1890

Sinclair line selector step-by-step sending instrument, 1880-1890

1880-1890
One back wound betatron magnet manufactured by the British Thomson-Houston Co. Ltd., Rugby, in 1947, together with one orbit tube and one electron gun, also one spare orbit tube and two spare electron gun. (This is a dummy)

Back wound betatron magnet by British Thomson-Houston Co. Ltd., 1947

1947