This stepped drum manual non-printing calculating machine is of English manufacture. It represents an improvement of the arithmometer invented by the Frenchman Charles Xavier Thomas in the 1820s and ...

For as busy as things can get at the grocery store on a typical afternoon just before the dinner hour, at least the modern experience has one thing going for it: it’s relatively quiet. Aside from the ...

Arithmetical teaching aid, "A. Sonnenschein's Improved Arithmometer", in two boxes 1 (A and B) and 2, made by George Philip and Son, London and Liverpool. Arithmetical teaching aid, "A. Sonnenschein's ...

AT a well-attended meeting of the Newcomen Society held in the rooms of the Royal Society on February 16, Mr. R. Nilsson gave a paper entitled "The Pascal Arithmometer and Other Means to Solve ...