Articles :

David Rittenhouse Telescopic Theodolite New!
From New England Antiques Journal

Hidden Signature on BENJAMIN COLE, London, Surveyor's Instruments

The Art of Colonial Surveying Instruments
From New England Antiques Journal

18th Century Colonial Methods of Dividing the Needle Ring of a Surveyor's Compass
From Rittenhouse Journal, Vol. 18, No. 1
Reprinted in The American Surveyor Magazine, Fall 2004

Thomas Greenough's Four Vaned Theodolite
From The American Surveyor Magazine,
May-June Issue, 2004

Rowland Houghton's Theodolate
From The American Surveyor Magazine,
Charter Issue, 2004

Construction Details of Rittenhouse Compasses
From Professional Surveyor Magazine,
December 2001

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