Parallel rule in bakelite signed `Lund's Rule, Pat. Nov. 2.20'

Made:
1922-1927 in New York

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Parallel rule in bakelite signed `Lund's Rule, Pat. Nov. 2.20' and `Bliss'. Sold by Bliss & Co. of New York, c. 1925

Details

Category:
Mathematics
Object Number:
1991-316
type:
rules (drawing)
credit:
Coffeen, D.