The Bausch & Lomb Dynoptic microscope is a high quality microscope that was manufactured in the U.S.A. designed for decades of use. This high quality microscope is suitable for a wide range of applications, and is superior in quality than most new microscopes on the market today. This version has a monocular head with a 10x eyepiece. This is offered with a 3 position or 4 position nosepiece. The 3 position nosepiece has 10x, 43x, and 97x oil objectives. The 4 position nosepiece has 3.5x, 10x, 43x, and 97x oil objectives. The mechanical XY stage makes moving the specimen simple and easy. The 1.30 N.A. condenser is focusable and has an iris diaphragm.