Comprising a wooden frame of size125x75x75 mm approx.,is provided with a glass plate mounted at an angle of 45° to reflect light downwards on to a plano-convex lens which rests on the base. Supplied with a plane glass plate and a plano-convex lens, without outer lens frame.
Comprising a wooden frame of size125x75x75 mm approx.,is provided with a glass plate mounted at an angle of 45° to reflect light downwards on to a plano-convex lens which rests on the base. Supplied with a plane glass plate and a plano-convex lens, without outer lens frame.
Size | 125x75x75 mm approx. |