Object Details
- 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
- Data Source
- National Museum of American History
- date made
- 1825-1900
- Credit Line
- Gift of Worcester Polytechnic Institute
- 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
- Object Name
- Pamphlet
