1PC 1-28mm Zoom Adjustable Iris Diaphragm Aperture Camera Laser Microscope Parts

1PC Adjustable 4-60mm Mechanical Iris Aperture Diaphragm for Microscope/Camera

1.8-22mm Adjustable Manual Zoom Iris Aperture Diaphragm for Camera Microscope

144LED Adjustable Ring Light Illu minator for Stereo Microscope Part EU Plug##

2-28mm Camera Lens Aperture Iris Diaphragm Manual Adjustable Aperture Microscope

1.5-25mm Adjustable Iris Diaphragm Aperture for Optical Microscope Camera Laser

SK12 Iris Diaphragm 1‑12mm Adjustable, 27mm OD with M4 Thread Bracket

0.5-15MM Diameter Digital Camera Microscope Adapter Zoom Optical Iris Diaphragm