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 204
back as shown at A and is slotted under the slide longitudinally toovercome expansion or contraction. (Fig. 18.) 5. Special—standard rule (10-inch), with steel back as in Hellener.There are also three adjusting screws to make the slide travel smoothly.For use in hot or damp climates. 6.… … Fig. 19. 12 178 SECTION F 8. Oneseet —10-inch rule, similar to Onesee, but with adjustingscrews.
