This interesting instrument is a brass monocular compound microscope manufactured by Powell and Lealand. It has an extra ocular and objective. Named a “Student’s Compound Microscope” by others because of heavy, cast iron, 3-pronged base & pillar. It is unusual primarily due to the lever-adjustable stage and white metal body tube.  The tube is signed “Powell & Lealand, London”.  P. H. Lealand was brother-in-law of Powell and was brought into partnership in 1841. The instrument is 14 inches high. Includes a mahogany case.