Engineering Design

An example of congruence. The two figures on the left are congruent, while the third is similar to them. The […]

An illustration of Desargues’ theorem, an important result in Euclidean and projective geometry. Oxyrhynchus papyrus (P.Oxy. I 29) showing fragment

A size chart illustrating the ANSI sizes. In 1995, the American National Standards Institute adopted ANSI/ASME Y14.1 which defined a

A closeup of a steel rule A ruler, sometimes called a rule or line gauge, is an instrument used in

An engineer’s scale. An engineer’s scale is a tool for measuring distances and transferring measurements at a fixed ratio of

A triangular architect’s scale, made of brass An architect’s scale is a specialized ruler designed to facilitate the drafting and

Dividers are similar to compasses, except they do not have a drawing point.  Instead, they have sharp points.  Dividers are

In geometry, a protractor is a circular or semicircular tool for measuring an angle or a circle. The units of

T-square A T-square is a technical drawing instrument used by draftsmen primarily as a guide for drawing horizontal lines on