Art Resource - AR921432

AR922850

Communicating by speaking tube, 1882.

Speaking tube, 1882. A cross-section of a ship, showing how communication between the bridge (top) and the rest of the vessel took place. Before the invention of the telephone this device was used for communication between different levels in houses, warehouses and ships. From Physics in Pictures by Theodore Eckardt. (London, 1882).

Unique Identifier AR921432

Type Image

Purpose Public

Size 3358px × 5197px

Photo Credit HIP / Art Resource, NY

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