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Also known as a Forrester's Compass or Miner's Compass, a dip (or dipping) needle is an instrument for measuring the intensity of the earth's magnetic field. It is used to locate buried or hidden metal. Manufactured by W. & L.E. Gurley, Troy, New York. Object ID: USGS-000345...
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Gurley Dip Needle Lake Superior Model with Case
Also known as a Forrester's Compass or Miner's Compass, a dip (or dipping) needle is an instrument for measuring the intensity of the earth's magnetic field. It is used to locate buried or hidden metal. Manufactured by W. & L.E. Gurley, Troy, New York. Object ID: USGS-000345...
Location: USA
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This instrument was manufactured by Keuffel & Esser Company, New York & New Jersey, serial #2300. Stadia Hand Transits are made of up a small telescope with cross and stadia hairs and a circular box which serves as either a magnetic compass or clinometer. The company sold these instruments from 1910...
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Stadia Hand Transit with Case
This instrument was manufactured by Keuffel & Esser Company, New York & New Jersey, serial #2300. Stadia Hand Transits are made of up a small telescope with cross and stadia hairs and a circular box which serves as either a magnetic compass or clinometer. The company sold these instruments from 1910...
Location: USA
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The cardinal points are lettered N, W, S and E, graduated to degrees and numbered every ten degrees to 360. The connecting sights fold away for storage. Manufactured by Keuffel & Esser, New York. Object ID: USGS-000162...
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Surveying Compass with Leather Case
The cardinal points are lettered N, W, S and E, graduated to degrees and numbered every ten degrees to 360. The connecting sights fold away for storage. Manufactured by Keuffel & Esser, New York. Object ID: USGS-000162...
Location: Reston, VA, USA
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The cardinal points are lettered N, W, S and E, graduated to degrees and numbered every ten degrees to 360. The connecting sights fold away for storage. Manufactured by Keuffel & Esser, New York. Object ID: USGS-000162...
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Surveying Compass with Leather Case
The cardinal points are lettered N, W, S and E, graduated to degrees and numbered every ten degrees to 360. The connecting sights fold away for storage. Manufactured by Keuffel & Esser, New York. Object ID: USGS-000162...
Location: Reston, VA, USA
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Bow Compass with Case. Also known as a Drop Bow Pen or Spring Bow, serial #760 C. This instrument was made by Eugene Dietzgen & Company, Chicago and New York and used by the U.S. Geological Survey Topographic Branch after 1945-1960s. Object ID: USGS-000645...
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Bow Compass with Case
Bow Compass with Case. Also known as a Drop Bow Pen or Spring Bow, serial #760 C. This instrument was made by Eugene Dietzgen & Company, Chicago and New York and used by the U.S. Geological Survey Topographic Branch after 1945-1960s. Object ID: USGS-000645...
Location: Reston, VA, USA
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The storage case has a sliding lid. The compass is marked Troughton & Simms Ltd, London, 1916, No.9214. A trough compass is used with either a plane table or a theodolite. The needle is a long magnetized bar of steel which is pointed at both ends. Object ID: USGS-000824...
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Trough Compass with Case, 1916
The storage case has a sliding lid. The compass is marked Troughton & Simms Ltd, London, 1916, No.9214. A trough compass is used with either a plane table or a theodolite. The needle is a long magnetized bar of steel which is pointed at both ends. Object ID: USGS-000824...
Location: Reston, VA, USA
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