Comprises of two polaroids - fixed polarizer with Laurent's Half device and rotatable analyzer, mounted at the opposite ends of a tube along the same horizontal axis.Complete assembly mounted on a heavy cast metal stand with adjustable height. Supplied with two polaroids (one used as polariser and other as analyser.), A Laurant €™s half shade device and 20 cm long observation tube glass. The polariser and half shade are fixed at one end. The analyser at the other end which can be rotated along a circular graduated scale 0-360 º. with a vernier reading to 6 min., a fine motion tangent screw is provided for fine adjustment
