slide rule

Moriarty was muttering to himself, figuring with slide rule, pencil and paper.

He readjusted the slide rule and slid the hairline over a bit.

In 1622, Willliam Oughtred invented the slide rule for calculations.

Should the slide rule be placed in the hands of a boy before, or after, he has mastered the theory of logarithms?

He sat in the big chair with his feet sticking straight out in front of him and played with a slide rule.

Mr. J: (hastily working his slide rule) Upwards of eight hundred thousand, I should say.

He dug out a slide rule and a pencil and pad and sat down with his back to the back of the pilot's seat, under the light.

The use of a slide rule will make this transference to a new average very easy.

He carried no dagger; if he had worn a dress weapon, it would probably have been a slide rule.

On the white marble table were her notebook, a book on matter transmission, and her slide rule.