How does a typical engineer square differ from a typical woodworker square?

Engineer tools usually differ by the inclusion of a scale. Carpenters and woodworkers are usually only interested in the measurement of something physical. Engineers typically work from scale drawings, which can come in a variety of scales. Most engineering measurement tools are marked with several different scales (1" = 1 foot, 1" = 5 feet, etc.) so that they can be used with different types of scale drawings.