Object Record

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Object ID 1955.013
Object Name Compass, Surveyor's
Collection Scientific Instruments
Credit line Gift of Mr. C.H. Ross
Year Range from 1825
Year Range to 1849
Made William J. Young
Makers mark "WJ Young / Maker / Philadelphia Patent"
Description Brass surveyor's compass (circumferentor) in a mahogany case with a hinged lid. The instrument consists of a brass circle divided into 360 degrees, a brass cover, and an index. At the end of each index is a sight. The entire instrument can be mounted on two detachable legs.
It was used to measure horizontal angles in surveying. Circumferentors were later superseded by the theodolite. The face is stamped "WJ Young / Maker" on the upper half of the dial and "Philadelphia Patent" on the lower half.

Dimensions H-4 W-7.375 L-14.75 inches
Dimension Details Case dimensions; compass is 14" long x 6 1/4" wide x 3 3/8" high.
Owned Tomlinson family
Provenance According to the donor, this compass was used in the early surveys of Sussex County and came from the Tomlinson family.
Subjects Surveying equipment
Search Terms Compasses
Surveyor' s Compasses
Sussex County
Tomlinson Family
William Young
Material Mahogany case; brass; glass
Place of Origin Philadelphia, PA