CIED Advanced Poster Series - ISIS Devices: ME-108 & ME-8104 Roller Limit Switch Firing Devices

This new series of posters available from MAC 7 utilizes the most up-to-date information on the IEDs and components used by ISIS. Developed by R.C. Gravett, these designs include photography of the real devices as well as detailed hand-drawn sketches. Each poster is printed on 18" x 24" heavy-duty laminated sheets. Content Preview: "In electrical engineering a limit switch is a switch operated by the motion of a machine part or presence of an object.They are used for controlling machinery as part of a control system, as a safety interlocks, or to count objects passing a point. A limit switch is an electro-mechanical device that consists of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator (Switch), the device operates the electrical contacts to make or break an electrical connection completing the circuit."