manual consists of 5 basic lessons including Switches & Circuits,
Relay Devices, Motor Control Devices, and Automatic Sensing Devices.
Each lesson is set up in lesson plan form with objectives, teaching
aids, and procedures. Subject matter covers all types of electric
controls such as common switches, thermostats, humidistats, relays,
photo controls, and magnetic starters. Written in easy-to-understand
terms, it has numerous illustrations for full learning.
pages, 1977, paperback