Suitable for R and D labs in Textile, Wood Pulp, Paper Industries, Agricultural, Botany and more, Dust proof sheet metal body equipped with 200mm dia graduated screen rotatable to 360° changeable magnifications and sharp and bright Projection. Magnifications 125x to 1000x. Achromatic Parfocal Objectives 5x, 10x, 20x, 40x (SL) projection grade. Rack & pinion focus and fine focus by slow motion mechanism. Co-axial mechanical stage plate and sub-stage condenser with Iris diaphragm. Stage micrometer slide 0.01mm for calibrations. 12V-100W halogen variable control, input 220VAC