Thomas Mercer HCH4 Electric Wind Scientific Chronometer Master Shelf Clock

Description:

Thomas Mercer HCH4 Electric Wind Scientific Chronometer Master Shelf Clock, St. Albans, England, No. 837, walnut case with hinged brass bezel, flat glass over the 5-in. silvered roman numeral dial with red arabic numeral twenty-four hour indication on outer edge, marked "Thomas Mercer Ltd., St. Albans, England, 837," electro-mechanical movement with Earnshaw-type detent escapement, cut bimetallic balance with circular compensation weights and a steel helical balance hair spring, two rear plates stamped 837, chronometer is wound electrically, there is also an output every minute to control slave clocks in the system, chronometer is wound electrically by a 12-volt DC power source, there is also an output every minute to control slave clocks in the system, ht. 11 in.

Note: The Hertfordshire chronometer clock collection by Thomas Mercer Ltd. was produced in four variations: HCH1: eight-day clock with fusee-wound spring-driven movement; HCH2: half-minute electrical contacts; HCH3: no contacts; HCH4: half second contacts. These were used were there was no personal supervision such as observatories, laboratories, factories, and lighthouses. The electrically wound mechanism works from a 12 volt D.C. and has six hours reserve.
Estimate $3,000-5,000

currently operating as intended.


Items may have wear and tear, imperfections, or the effects of aging. Any condition statement given, as a courtesy to a client, is only an opinion and should not be treated as a statement of fact. Skinner shall have no responsibility for any error or omission.

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