Old instruments
Regulator Clock
Direct answer
Regulator Clock is a precision pendulum clock adjusted to provide a steady observatory or workshop time standard.
Regulator Clock is a high-stability reference clock used in historical astronomy, timekeeping, or navigation.
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At a glance
- Found in
- Historical Almanacs & Instruments
- Related
- Marine Chronometer, Astronomical Clock, Pendulum Clock, Clepsydra
Regulator Clock is a high-stability reference clock used in historical astronomy, timekeeping, or navigation.
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The story behind Regulator Clock
Astronomical regulators worked alongside transit telescopes in observatories and time-distribution systems.
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The Book of the Sky
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Why Regulator Clock matters
Regulator Clock matters because a stable rate lets other clocks and timed observations be compared against one local reference.
Regulator Clock in practice: an example
Transit observations can determine the regulator's error, which is then applied to subsequent timestamps.
Where readings of Regulator Clock go wrong
Temperature, pressure, support motion, escapement changes, and unrecorded adjustment affect the rate.
Sources and editorial method
Research references used for this entry include:
- Royal Museums Greenwich: A Unique History of Timekeeping - Museum overview of marine chronometers, astronomical regulators, and the development of precision timekeeping.
- Source
- The Great Almanac Dictionary
- Category
- Historical Almanacs & Instruments
- Last updated
- 2026-09-26
Explore Regulator Clock
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Common questions
What is Regulator Clock?
Regulator Clock is a precision pendulum clock adjusted to provide a steady observatory or workshop time standard.
What do people get wrong about Regulator Clock?
Temperature, pressure, support motion, escapement changes, and unrecorded adjustment affect the rate.
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