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 194
es to revolutions, i.e. doublestrokes. The fifth scale relates to length of stroke. The left-hand side of the sixth scale relates to feetper second. The right-hand side of the sixth scale relates toefficiency for single-acting, double-acting, and duplextypes of pumps respectively. The seventh scale… … a 5 2 ; S f — O - <M 10 1 ;i *
