AO Scientific Instruments

A O POLSTAR POLARIZING MICROSCOPE Iris Diaphragm

Flip-In Focusable • Bertrand Lens

20mm Field of View plus Cross Hoir Reticle

Fixed Analyzer

Cross Hoir Orientation (40° 0 90°)

Focusable Nosepiece Low Positioned Coaxial Coarse and Fine Controls

Stage Lock Slide-In Compensator —

I

Graduated Rotatable — Circular Stage

Quick Change, Plug-in Halogen Lamp

Stage Centering Control Vernier Scale —

Condenser Centering Control

Illumination Control with built-in transformer

Graduated Rotatable Polarizer All this plus Strain Free Objectives and Condensors Neutral Density Filter Control Field Diaphragm Control

PUTS EVERYTHING UP FRONT WHEREYOUCANSEEIT. This feature alone makes it the most convenient easiest to use polarizing microscope you can buy. See for yourself. Ask for a convincing demonstration or more information. AO Scientific Instruments, Box 123, Buffalo, N.Y. 14240 CIRCLE 5 ON READER SERVICE CARD

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