"Universal" Helio-chronometer, for northern hemisphere, 1901-1922

Made:
1901-1922 in Preston
maker:
Pilkington and Gibbs Ltd. (maker)

Universal Helio-chronometer, with rag-bolt, screwdriven box key, patent No 10,787, Pilkington and Gibbs Ltd., Preston,1901-1922. It was designed to correct for the equation of time, meaning that standard mean-time could be ascertained at any place, providing there is sunlight. This model for use in the Northern hemisphere, a serparate one designed for Southern hemisphere.

Details

Category:
Time Measurement
Object Number:
1922-156 Pt1
type:
helio-chronometer
credit:
Pilkington and Gibbs Ltd.

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