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1929 Press Photo Tide-predicting Machine - RSC87095

$12.33
AdID: 624444

Availability: In stock

Part Number: RSC87095

Height: 5

Width: 9

Source: Rogers

Details

This is an original press photo. Tide-predicting Machine.

A tide-predicting machine was a special-purpose mechanical analog computer of the late 19th and early 20th centuries, constructed and set up to predict the ebb and flow of sea tides and the irregular variations in their heights - which change in mixtures of rhythms, that never (in the aggregate) repeat themselves exactly. Its purpose was to shorten the laborious and error-prone computations of tide-prediction. Such machines usually provided predictions valid from hour to hour and day to day for a year or more ahead.
(Wikipedia)Photo measures 8.75 x 5.25inches. Photo is dated 11-11-1929.