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Colonial Instruments' photostream |
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Paul Temple's presentation on the accuracy of divisions on Colonial needle rings.
Paul has developed a measuring jig to determine the accuracy of the needle rings of...
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Uploaded on Nov 18, 2010
Jeffrey Lock's presentation on 17th and 18th century English theodolites.
Jeffrey's presentation spanned instruments from 1665 to 1800 showing the subtle transition...
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Uploaded on Nov 18, 2010
Torben Jenk's Presentation
Using manuscript maps from the City Archives and the Historical Society of Pennsylvania, Torben Jenk...
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Uploaded on Nov 18, 2010
Torben Jenk
Further discussion by Torben Jenk on Surveyor General Benjamin Eastburn's modification during the...
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Uploaded on Nov 18, 2010
Jeffrey Lock's presentation on the conservation of the spectacular Heilig Vernier Compass.
One of the most important Colonial surveying instruments inspected by Mr. Lock to date comes from...
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Uploaded on Nov 18, 2010
Members inspecting instruments from the collection of the American Philosophical Society.
A hands-on inspection session highlighting important instruments from the American Philosophical...
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Uploaded on Nov 18, 2010
Close-up inspection of instruments from the collection of the American Philosophical Society.
Kristen Froehlich, Curator of the collections at the Philadelphia History Museum at Atwater Kent,...
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Uploaded on Nov 18, 2010
Inspection of an early map of Philadelphia from the collection of the City Archives.
Torben Jenk discusses some of the intricate details of a massive manuscript map from...
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Uploaded on Nov 18, 2010
Members inspecting early maps from the collection of the Historical Society of Pennsylvania.
Carl Guckelberger and others admiring the artistic layout and details of an early manuscript map.
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Uploaded on Nov 18, 2010
Members inspecting early maps from the collection of the Historical Society of Pennsylvania.
Kristen Froehlich, blessed with great close-up vision, inspects the artistic execution of a portion of this large manuscript map.
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Uploaded on Nov 18, 2010
David Rittenhouse Orrey at the University of Pennslyvania
A close-up look at the gearwork of David Rittenhouse's Orrey
Transit Telescope
2010 Compass Collector's...
Compass Collector's...
Anatomy of a Restoration
Compass Collectors Association
