Salient Features:- Monocular body, tube inclinable upto 90 degrees mechanical tube length 160mm. Square Plain stage 120 x120 mm With Lock type stage clips Fitted with disc diaphragm. Par focal Achromatic objectives 10x and 45x(S.L.) or 40x (S.L.) With high numerical Aperture for greater resolution. Eye Piece 10x,15x (Huygenian) Magnification 100x to 675x or 600x Plano Concave mirror illumination STUDENT MICROSCOPE : MODEL UNS-7 ISI MARKED I.S. :3686-1966Same as Model No UNS 5 But with movable double lens condenser N.A. 1.25 with iris diaphragm & swing out filter holder.