Pamphlet, Rules for Using the Diagraph

Description
The instrument shown in this document resembles the perspective tracing instrument patented in Great Britain by Francis Ronalds in 1825. Behind this text, written in ink, are instructions that relate to the used of the "French Diagraph," quite possibly the Gavard perspectograph.
Received with 1987.0923.02.
Location
Currently not on view
date made
1825-1900
Physical Description
paper (overall material)
Measurements
overall: .2 cm x 14.3 cm x 23 cm; 3/32 in x 5 5/8 in x 9 1/16 in
ID Number
1987.0923.03
accession number
1987.0923
catalog number
1987.0923.03
Credit Line
Gift of Worcester Polytechnic Institute
subject
Mathematics
Drafting, Engineering
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Single Drawing Instruments
Data Source
National Museum of American History, Kenneth E. Behring Center

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