The Etude-5M is a 2 x 2 inch slide projector manufactured by FED. It has an unusual base consisting of a ball & socket and tripod, thus allowing the projector very flexible positioning. The 5M was available with a choice of three different lenses. This one has a T-3 f/2.8 80mm lens, but a T f/2.8 100mm and Vario f/3.5 85-120mm were also available. The lamp is rated 220-230 volt, 100 watt.

David Tomlinson.