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Sidereal and Mean Time Clocks, 1862-09-16/1866-03-02 Digital

Item — Box 4Identifier: KG11365-6, phaedra0151
Scope and Contents:

Directions for Absolute Time; Brief Ephemeris for locally-viewed stars for May 1865; Eclipse of Sun - End West Wing Equatorial; Timing output data and status information relating to a number of chronometric devices