James W. Queen & Co. Triangular Offset for Architect's Rule

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Description
This three-inch triangular boxwood rule is grooved on each side. The top edge of one side is divided to 1/10" and numbered by ones from 0 to 3. The bottom edge is divided to 1/50" and numbered by twos from 0 to 14. This side is marked: QUEEN & CO. PHILAD'A.
The second side is divided to 1/60" and numbered by twos from 0 to 18 along one edge and divided to 1/30" and numbered by twos from 0 to 8 on the other edge. The third side is divided to 1/40" and numbered by twos from 0 to 12 along one edge and divided to 1/20" and numbered by ones from 0 to 6.
James W. Queen of Philadelphia sold a two-inch triangular boxwood scale for offsets as model 464-1/2 from at least 1874 to at least 1884 for 75¢. No three-inch scale is mentioned in catalogs from this time period. The Department of Mathematics at Brown University gave this object to the Museum in 1973.
References: James W. Queen & Co., Priced and Illustrated Catalogue and Descriptive Manual of Mathematical Instruments and Materials (Philadelphia, 1874), 41; James W. Queen & Co., Priced and Illustrated Catalogue and Descriptive Manual of Mathematical Instruments and Materials (Philadelphia, 1884), 44.
Location
Currently not on view
date made
late 19th century
place made
United States: Pennsylvania, Philadelphia
Physical Description
boxwood (overall material)
Measurements
overall: 2.1 cm x 9.5 cm x 2.1 cm; 13/16 in x 3 3/4 in x 13/16 in
ID Number
MA.304722.05
accession number
304722
catalog number
304722.05
Credit Line
Gift of Brown University Department of Mathematics
subject
Mathematics
Drafting, Engineering
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Medicine and Science: Mathematics
Science & Mathematics
Scale Rules
Data Source
National Museum of American History, Kenneth E. Behring Center

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