Ruled Surface by Richard P. Baker, Scroll of Higher Order

Ruled Surface by Richard P. Baker, Scroll of Higher Order

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Usage conditions apply
This ruled surface has a wooden frame painted black. The frame has two horseshoe-shaped pieces on each of two opposite sides. These have holes which are strung to y-shaped pieces on the top and bottom. The lower surface has red threads, the upper one yellow threads. A pink yarn down the middle is tangent to both ruled surfaces.
Some American geometric models copied those of European makers. This is one of them. The maker, Richard P. Baker of the University of Iowa, attached a paper label that reads: Scroll of higher order. The model closely resembles a smaller model sold by the German maker Ludwig Brill as a ruled surface with self-intersections forming a line, with four pinch points on the line. For an example of the German model, see 1985.0112.130. For examples of Baker’s model, see MA.304722.30 and MA.211257.123.
Currently not on view
Object Name
geometric model
Other Terms
Geometric Model; Scroll of Higher Order
Baker, Richard P.
place made
United States: Iowa, Iowa City
Physical Description
thread (overall material)
wood (overall material)
metal (overall material)
red (overall color)
black (overall color)
yellow (overall color)
screwed and threaded (overall production method/technique)
average spatial: 36.5 cm x 34.3 cm x 33.8 cm; 14 3/8 in x 13 1/2 in x 13 5/16 in
ID Number
accession number
catalog number
Credit Line
Gift of Frances E. Baker
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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