Hypsometer made by Griffin and Tatlock Ltd., London Hypsometer made by Griffin and Tatlock Ltd. 1926-1954
Hypsometer with two thermometers in wooden cases and a boiling chamber (ex Antarctic Expedition, 1901), by L. Casella, Holborn, London England, 1895-1898. (see part records) Hypsometer used on the Antarctic Expedition, 1901 1895-1898