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

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
Object Name
scale rule, triangular
date made
late 19th century
Maker
Queen & Co.
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
place made
United States: Pennsylvania, Philadelphia
ID Number
MA*304722.05
accession number
304722
catalog number
304722.05
subject
Scale Rules
Science & Mathematics
Mathematics
Drafting, Engineering
See more items in
Medicine and Science: Mathematics
Scale Rules
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Brown University Department of Mathematics
Additional Media

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