MS-316 PVG NEWTON COLOR DISC PLASTIC BASE

To demonstrate that white light is composed of all the spectral
colors, by the rotation of a multicolored disc. Hand driven, consist
of a multi colored i.e. spectral colors metal disc of diameter 150 or
200 mm. with a metal pillar, attached to another pulley with rubber
belt, fitted to the wooden or metal base having four rubber feeT