Note 7 — The First Self-Registering Instruments
Reading edition
H. Alan Lloyd, "Horology and Meteorology," Journal Suisse d'Horlogerie, November-December, 1953, nos. 11, 12, p. 372, fig. 1.
Reading edition
H. Alan Lloyd, "Horology and Meteorology," Journal Suisse d'Horlogerie, November-December, 1953, nos. 11, 12, p. 372, fig. 1.