DRV Pinwheel Calculator, ca. 1953
This is a Pinwheel Calculator. It was manufactured by Schubert. It is dated ca. 1953 and we acquired it in 1986. Its medium is enameled metal, molded plastic. It is a part of the Product Design and Decorative Arts department.
The pinwheel calculator, invented in the 1870s, had circular discs, or pinwheels, with nine retractable pins. A side lever could expose anywhere from 0 to 9 pins, and therefore when coupled to a counter the pinwheels could, with each rotation, add a number from 0 to 9 to the result. This simple and reliable machine was capable of all four arithmetic functions. This model DRV calculator facilitated one-handed operation, with all of the controls located on the right-hand side.
It is credited
Gift of Barry Friedman and Patricia Pastor.
Our curators have highlighted 3 objects that are related to this one.
Its dimensions are
Overall: 13.5 x 29.5 x 15.9 cm (5 5/16 x 11 5/8 x 6 1/4 in.)
It has the following markings
DRV 55K 115/ Made in Germany
Cite this object as
DRV Pinwheel Calculator, ca. 1953; Manufactured by Schubert ; Germany; enameled metal, molded plastic; Overall: 13.5 x 29.5 x 15.9 cm (5 5/16 x 11 5/8 x 6 1/4 in.); Gift of Barry Friedman and Patricia Pastor; 1986-99-22
This object was previously on display as a part of the exhibition Bob Greenberg Selects.