Page "Slide rule" Paragraph 17

Here the user of the slide rule must remember to adjust the decimal point appropriately to correct the final answer.

We wanted to find 2 × 7, but instead we calculated ( 2 / 10 )× 7 = 0. 2x7 = 1. 4.

So the true answer is not 1. 4 but 14.

Resetting the slide is not the only way to handle multiplications that would result in off-scale results, such as 2 × 7 ; some other methods are: