The citation information for this eighteen-page booklet is: <i>How to Use a Slide Rule</i> (Chicago: Eugene Dietzgen Co., 1942). After a description of the features of the slide rules sold by Dietzgen, the booklet gives a tour of the slide rule for beginners. Instructions are provided for reading a basic set of Mannheim scales, such as those on MA.335270. Sample problems in multiplication, division, square roots, proportion, and trigonometry are solved. Additional scales, such as K and CI, are briefly described.
