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HARRISON, George R.. [Drop-head title:] Improved design of the mechanical interval sorter and its application to the analysis of complex spectra [In The Review of Scientific Instruments with Physics News and Views, Vol. 4, No. 11, New series, November 1933].

Lancaster, PA. American Institute of Physics, 1933. First edition.
8vo. 581-586pp. Contemporary buff wrappers, printed paper lettering-piece. Very minor shelf-wear. Erwin Tomash's copy, though not identified as such.
A description of an instrument for recording spectra sprocket-driven paper tape. Photographs of the machine and diagrams of the tape drive mechanism are provided together with samples of the tape and machine output.

From the recently dispersed library of Erwin Tomash (1921-2012), American engineer recognised for his early pioneering work with computer equipment peripherals. His library consisted of over 3,000 books and manuscripts relevant to the history of computation, from medieval and renaissance works on arithmetic, finger-reckoning and the abacus, to the birth in the twentieth century of theoretical and practical computer science under Alan Turing.
Tomash H 24.
£ 50.00 Antiquates Ref: 24008