1.   All of them will make either a slide rule or an abacus as a way of presenting how number sets work.

2.   There were several colors of pencils, even a slide rule, at which she was frowning.

3.   Once a useful tool, slide rules have fallen into obsolescence.

4.   Allmon became a full-time market guru, collecting and calculating with a slide rule much of the data that today can be found in computer data banks.

5.   And all of it was done with slide rules and computers less sophisticated than your cellular phone.

6.   And all members are given a simple pocket slide rule that calculates the points.

7.   Because the fact of the matter is that the personal letter is dead, having gone the way of lace valentines, slide rules and leaded gasoline.

8.   But anyone handy with a slide rule knows it is not used for addition and subtraction.

9.   By reading e-mail to his site, Shawlee quickly discovered that there was an unsated demand for slide rules.

10.   Despite its rigidity and meticulous demarcations, the slide rule created a sense of rubbery numerical space, revealing the magic latent in calculation.