Pantograph in Case Like Those Made by William Cary, Signed by John L. Wilson

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Description
This brass pantograph is stored in a wooden case with a lock (key missing) and two hook latches. Two arms are marked from 1/2 to 11/12. The instrument moves on six ivory rollers (one is missing). It is held together with screws. The pencil or tracer slides along one arm while the other point is stationary. An iron weight covered with black felt anchors the pantograph. The pencil holder has a cup at the top to hold weights to darken the pencil writing. There are no holes for the string.
Engraving on one bar of the pantograph reads: John L. Wilson, No. 2. A tag on the front of the lid reads: PROPERTY OF (/) UNIVERSITY OF PITTSBURGH (/) PITTSBURGH, PA 15213.
Compare MA.317868, MA.327891, MA.334888, and 2005.0182.8.
Location
Currently not on view
Physical Description
wood (overall material)
brass (overall material)
metal (overall material)
Measurements
overall: 12.5 cm x 67.2 cm x 8.1 cm; 4 29/32 in x 26 15/32 in x 3 3/16 in
ID Number
MA.334888
accession number
315134
catalog number
334888
Credit Line
Gift of University of Pittsburgh, Civil Engineering Department
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Pantographs
Data Source
National Museum of American History, Kenneth E. Behring Center

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