Title
Newham's Rotary Principal Interest Demonstrator
Catalog Number
B1675.91
Type
Physical object
Description
Object consists of a circular slide rule-like interest demonstrator mounted inside a book cover. Included is a one page instruction sheet which is bound into the cover.
Date
ca. 1846
Identifying Numbers
Other number |
2E-2 handwritten in pencil inside back cover |
Other number |
8623D handwritten in pencil inside back cover |
Dimensions
overall: .25 x 9.5 x 9 1/2 in
Category
Pre-computer/other
Collection Title
Gwen Bell artifact and book collection
Series Title
Pre-computing artifacts