CC0 · no rights reserved
Geometric Model by A. Harry Wheeler, Measurment of a Spherical Angle
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
This cut paper tan object consists of two pieces showing circular discs with a projecting tangent plane at the top, as well as a paper ring of the same diameter. A mark on one piece reads: MSA*. Another mark reads: Pat 1,192,483. The model is not assembled.
National Museum of American History’s own descriptionCredit lineGeometric Model by A. Harry Wheeler, Measurment of a Spherical Angle. Wheeler, Albert Harry. National Museum of American History, Gift of Helen M. Wheeler. CC0.