Microscope PartsOnline version Microscope Parts by Rina 1 Diaphragm 2 Mechanical stage 3 Condenser 4 Stage controls 5 Diopter adjustment 6 Ocular lens 7 Illuminator (Light Source) 8 Objective lens 9 Nose piece 10 Aperture 11 Head 12 Base 13 Brightness adjustment 14 Arm (Carrying handle) 15 Stage clip 16 Light switch 17 Fine adjustment 18 Coarse adjustment