LED Ring Light - 76mm Diameter

Microscope Track Stand, 76mm Coarse Focus Rack, LED Ring Light, LED Light Base, Fan-Shape (Dimmable)

Microscope LED Ring Light Illuminator, USB 5V 144 LED

LED rings diameter 120mm - RGB set with infrared driver

LED Transmitted Light Dia. 140x6mm Track Length 280mm Focus

5137 Adafruit Industries LLC, Optical Inspection Equipment

HEI-TS-LED HEI Scope Series Dual Illuminated Track Stand with 76mm

Scienscope SSZ-II Stereo Zoom microscope SZ-PK1-AN HD USB Camera

PA-5F-IFR07 Simul-Focal Trinocular Zoom Stereo Microscope - 0.7X

Microscope Ring Light USB Light, 76mm Big Working Space USB LED

LED Ring Light - 76mm Diameter : ID 4433 : $17.95 : Adafruit

Kaisi 60 LED Ultrathin Adjustable Microscope Ring Light - Martview