NEWTON’S RING APPARATUS: Comprising a pair of glasses one plane and the other slightly convex in metal frame with three screws for applying pressure:
Specially deeigned for Newton experiment. It can also be used in various positions. The bed is of cast iron and carries the machined guide ways. The scale is 17cms long. The sliding carriage is provided with microscope slow motion and travels app. 3cms in one traverse. Microscope tube is fitted with achromatic objective and focusing is provided with rack and pinion. Vernier constant 0.001cm. Complete in well polished wooden case. Having stainless steel scale and vernire.