Single Phase Polarising Projection Microscope is designed for observation, demonstration and precise measurements of geological specimen under polarized light, equipped with graduated 200 mm screen rotatable through 360 & deg; low voltage 100 watts halogen bulb, solid state variable light control transformer and electronic fuse. The Microscope can be used to evaluate the cotton maturity yarn hairiness, physical identification of fibre in polarized light. The Microscope is designed with cross section of fibres and checks all types of yarns, dust cover, micrometer slide, spare bulb and fuse in card board box with following optical combination. The Single Phase Polarising Projection Microscope requires 220 volts, 50hzs, single phase AC supply.