IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This relatively late English-built ...

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 ...

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 ...

MOST of our readers who have anything to do with calculations have heard of the above calculating machine, the invention of M. Thomas de Colmar. A few remarks, therefore, on its construction and ...