The Celestron Model #44104 Advanced Biological Microscope is an intermediate level biological microscope with advanced features. The electric illuminator provides direct control of light, and the Abbe condenser and Iris diaphragm are supplied to concentrate and adjust the illumination. The microscope includes a mechanical stage equipped with knobs controlling both axes of movement for easy centering of specimen slides. This microscope is ideal for hobbiests or educational environments due to its simple design and versatility. The monocular head adjusts from 0° to 60° for comfortable viewing.