A practical treatise on the use of the microscope, including the different methods of preparing and examining animal, vegetable, and mineral structures. Microscopes; Microscopy. OPAQUE OBJECTS. 199 The condensing lens, being
Plate IV: Microscope for opaque objects - Science History Institute Digital Collections
How Does An Optical Microscope Work | DK Find Out
1.5: Microscopy - Biology LibreTexts
E-7000 Upright Trinocular Metallographic Microscope for Observe Opaque Objects - China Metallographic Microscope, Trinocular Microscope | Made-in -China.com