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AZIMUTH AND STEERING COMPASS BY GEORGE ADAMS Circa 1770
Signed, with the original label and on the underside of the compass card "Geo Adams". Printed label on the underside of the lid marked "I hereby certify that I have examined this Compass and that it appears to be rightly Constructed" and signed "Geo. Adams". A second label states "Azimuth and Steering Compass Invented By Gowan Knight F.R.S. Made by George Adams, Mathematical Instrument Maker to His Majesty at Tycho Brahes Head in Fleet Street, London. N.B. Drawing Instruments, Telescopes and Hadley's Quadrants of the best Construction". Printed dry card compass rose, marked "Made by G. Adams Fleet Strt. London Instt. Makr. to His Majesty", mounted within a scribed metal degree ring, suspended in a brass rotating drum case with gimbal mounts and brass sights, within the original oak box. "East" and "North" compass points are decorated. Compass card diameter 6.5". Box height 9.5". Width 12". Depth 12".
Provenance:
R. Frank Collection of Scientific Instruments, until 1986.
Sotheby's, London, The R. Frank Collection of Scientific Instruments, March 1986.
Acquired from the above at that sale.
Literature:
Captain Cook, R.N. The Resolute Mariner
by Thomas Vaughan and C.M. Murray-Oliver (Oregon Historical Society, 1974).
Exhibited:
Oregon Historical Society, 1974.
In the early days of map making, Jerusalem was placed in the center of the map because it was considered the most holy city in Christendom. Subsequently, in addition to the north point on the compass rose card, many of the early compasses had the east point embellished in recognition of the fact that Jerusalem lay to the east of most of the Western commercial centers.
In this early compass, the card contains traces of this tradition, with the east point having minor embellishments. This was to evidence the compass maker's faith and/or invoke the protection of the Christian God's grace and protection for the ship on which the compass was used.
In addition to its use for steering the ship, the azimuth compass was used to determine compass deviation from true north using the direction of the sun and to determine the bearing of distant objects sighted through the vanes. This type of steering compass was the first to be patented. The first sighting compass was invented around 1600 by William Barlow (Compass by A. Gurney (2004), p. 63-64). This design uses a permanently magnetized steel needle invented by Gowan Knight.
George Adams (1704-1773) was an inventor and author as well as instrument maker to both the King and the Honorable East India Co. He was the most prominent maker of Hadley's quadrants during the 18th Century.
An instrument of this type was used by Captain James Cook on his voyages of discovery.
From the Kelton Collection of Marine Art & Artifacts.
Signed, with the original label and on the underside of the compass card "Geo Adams". Printed label on the underside of the lid marked "I hereby certify that I have examined this Compass and that it appears to be rightly Constructed" and signed "Geo. Adams". A second label states "Azimuth and Steering Compass Invented By Gowan Knight F.R.S. Made by George Adams, Mathematical Instrument Maker to His Majesty at Tycho Brahes Head in Fleet Street, London. N.B. Drawing Instruments, Telescopes and Hadley's Quadrants of the best Construction". Printed dry card compass rose, marked "Made by G. Adams Fleet Strt. London Instt. Makr. to His Majesty", mounted within a scribed metal degree ring, suspended in a brass rotating drum case with gimbal mounts and brass sights, within the original oak box. "East" and "North" compass points are decorated. Compass card diameter 6.5". Box height 9.5". Width 12". Depth 12".
Provenance:
R. Frank Collection of Scientific Instruments, until 1986.
Sotheby's, London, The R. Frank Collection of Scientific Instruments, March 1986.
Acquired from the above at that sale.
Literature:
Captain Cook, R.N. The Resolute Mariner by Thomas Vaughan and C.M. Murray-Oliver (Oregon Historical Society, 1974).
Exhibited:
Oregon Historical Society, 1974.
In the early days of map making, Jerusalem was placed in the center of the map because it was considered the most holy city in Christendom. Subsequently, in addition to the north point on the compass rose card, many of the early compasses had the east point embellished in recognition of the fact that Jerusalem lay to the east of most of the Western commercial centers.
In this early compass, the card contains traces of this tradition, with the east point having minor embellishments. This was to evidence the compass maker's faith and/or invoke the protection of the Christian God's grace and protection for the ship on which the compass was used.
In addition to its use for steering the ship, the azimuth compass was used to determine compass deviation from true north using the direction of the sun and to determine the bearing of distant objects sighted through the vanes. This type of steering compass was the first to be patented. The first sighting compass was invented around 1600 by William Barlow (Compass by A. Gurney (2004), p. 63-64). This design uses a permanently magnetized steel needle invented by Gowan Knight.
George Adams (1704-1773) was an inventor and author as well as instrument maker to both the King and the Honorable East India Co. He was the most prominent maker of Hadley's quadrants during the 18th Century.
An instrument of this type was used by Captain James Cook on his voyages of discovery.
From the Kelton Collection of Marine Art & Artifacts.
Provenance:
R. Frank Collection of Scientific Instruments, until 1986.
Sotheby's, London, The R. Frank Collection of Scientific Instruments, March 1986.
Acquired from the above at that sale.
Literature:
Captain Cook, R.N. The Resolute Mariner by Thomas Vaughan and C.M. Murray-Oliver (Oregon Historical Society, 1974).
Exhibited:
Oregon Historical Society, 1974.
In the early days of map making, Jerusalem was placed in the center of the map because it was considered the most holy city in Christendom. Subsequently, in addition to the north point on the compass rose card, many of the early compasses had the east point embellished in recognition of the fact that Jerusalem lay to the east of most of the Western commercial centers.
In this early compass, the card contains traces of this tradition, with the east point having minor embellishments. This was to evidence the compass maker's faith and/or invoke the protection of the Christian God's grace and protection for the ship on which the compass was used.
In addition to its use for steering the ship, the azimuth compass was used to determine compass deviation from true north using the direction of the sun and to determine the bearing of distant objects sighted through the vanes. This type of steering compass was the first to be patented. The first sighting compass was invented around 1600 by William Barlow (Compass by A. Gurney (2004), p. 63-64). This design uses a permanently magnetized steel needle invented by Gowan Knight.
George Adams (1704-1773) was an inventor and author as well as instrument maker to both the King and the Honorable East India Co. He was the most prominent maker of Hadley's quadrants during the 18th Century.
An instrument of this type was used by Captain James Cook on his voyages of discovery.
From the Kelton Collection of Marine Art & Artifacts.
Condition: Overall very good condition. The paper compass card has buckled slightly and lifting from the dial. The gimbal and azimuth move freely, and are in very good condition but the compass is not giving an accurate directional read. It appears that the outer bezel is a later addition. To the best of our knowledge the piece is complete.
Please contact Eldred's 48 hours prior to the auction start time with condition report requests. Please do not bid on any item without reading the condition report. The absence of a condition report does NOT imply that an an object is free of defects or restoration. Please contact Eldred's before bidding with any questions as to condition. Condition reports are provided as a complimentary service and only reflect the opinion of Eldred's and should not be taken as a statement of fact. Condition reports only detail flaws or restorations and do not take into account wear, fading, or other issues consistent with an object's age.
Please contact Eldred's 48 hours prior to the auction start time with condition report requests. Please do not bid on any item without reading the condition report. The absence of a condition report does NOT imply that an an object is free of defects or restoration. Please contact Eldred's before bidding with any questions as to condition. Condition reports are provided as a complimentary service and only reflect the opinion of Eldred's and should not be taken as a statement of fact. Condition reports only detail flaws or restorations and do not take into account wear, fading, or other issues consistent with an object's age.
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August 13, 2020 10:00 AM EDT
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