Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)
Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 104
is arrangementof the Thomas machine, namely, that the individual digits of large numbers CALCULATING MACHINES 79 are, as a result of the size of the cylinders, separated fromjjone another, andtherefore difficult to read, was successfully avoided by the thin, close-setparallel discs of the Odhner… … Fig. 5.—Metal Disc.
