Magnetic Variation

Magnetic Variation

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Magnetic Variation

Magnetic Variation

+ Show Sold Items

Magnetic Variation

CHURCHMAN, John To George Washington President of the United States of America this Magnetic Atlas or Variation Chart is humbly inscribed by John Churchman.

A presentation copy of the last gasp for Edmund Halley’s theory for the determination of longitude by magnetic declination

£50,000

By CHURCHMAN, John, 1790.

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