This eight-wheeled stylus operated non-printing adding machine has wheels of brass and copper and a steel frame. Two metal supports on the back can be lowered so that the machine is at an angle rather than lying flat. The machine is marked on the front: THE CALCUMETER. It is marked on the right side: H.N.MORSE (/) TRENTON,N.J. It is marked on the left: 18143 (/) PAT’D DEC 17 ‘01. This is number 38 in the Felt & Tarrant collection.

The Calcumeter was invented by James J. Walsh of Elizabeth, N.J. who applied for a patent January 16, 1901, and was granted it December 17, 1901 (U.S. Patent 689,225). Walsh went on to patent a resetting device for the machine on September 1, 1908 (U.S. Patent #897,688). This example of the machine does not have that mechanism. The instrument was first manufactured by Morse & Walsh Company in 1903 and 1904, but by 1906 was produced by Herbert North Morse of Trenton. Morse was a native of New Jersey who attended the South Jersey Institute in Bridgeton, N.J. and then spent a year at Harvard College. By 1916, he not only owned the Calcumeter adding machine business, but was assistant commissioner of education for the state of New Jersey.

Compare MA.335352.


Harvard College Class of 1896, "Report V," June, 1916, Norwood, Massachusetts: Plimpton Press, p. 192.

Date Made: 1901

Maker: Morse, H. N.

Location: Currently not on view

Place Made: United States: New Jersey, Trenton

Subject: Mathematics


See more items in: Medicine and Science: Mathematics, Adding Machines, Science & Mathematics


Exhibition Location:

Credit Line: Gift of Victor Comptometer Corporation

Data Source: National Museum of American History

Id Number: MA.323622Accession Number: 250163Catalog Number: 323622

Object Name: adding machine

Physical Description: brass (overall material)copper (overall material)steel (overall material)Measurements: overall: 2 cm x 25 cm x 5.3 cm; 25/32 in x 9 27/32 in x 2 3/32 in


Record Id: nmah_690290

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