Order Nr. 133625 LE SIDÉROSTAT. Léon Foucault.
LE SIDÉROSTAT.

LE SIDÉROSTAT.

(Science).
  • (Paris, France: L'Académie des Sciences, 1869.
  • 4to.
  • unbound, edges uncut, in later portfolio
  • 6 pages

Price: $350.00  other currencies

Order Nr. 133625

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Text in French. Extracted from Comptes rendus des séances de L'Académie des Sciences, LXIX, December 13, 1869. The siderostat is a revolving flat mirror designed to enhance telescopic viewing. Foxing. Unopened.

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