This trinocular 7X-90X zoom stereo microscope gives crystal clear sharp images. The rubber eyeguards provide further comfort. The trinocular port enables to add photographic or video capability. The double-arm boom stand allows you to turn the microscope head around three different axes (x, y, and z), allowing you to point the microscope head toward to ANY direction.
eBay
AmScope 6.7X-45X Trinocular Zoom Stereo Microscope Head w/ Shutter Pin, Lock, & Click Stop
Aliexpress UK
This is the 18MP version. Producing a stunning, top quality, low noise image with good colour reproduction with a fast live refresh rate, all managed by the fully featured software. Low glare, even illumination is provided by a LED ring light.
eBay
Vanguard Project—AmScope 7X-50X Simul-Focal Trinocular Continuous Zoom Stereo Microscope Head--Ship
Aliexpress UK
Trinocular head with 45 degree inclined 360 degree swiveling eye tubes. Head: 360 degree rotatable 45 degree inclined trinocular. One Trinocular Stereo Zoom Head. The SMZK-1TS stereo microscope is an ideal microscope for industrial inspection or biological analysis, with its 7X-45X zoom range.
eBay
Vanguard Project—AmScope 7X-50X Simul-Focal Trinocular Continuous Zoom Stereo Microscope Head--Ship
Aliexpress UK
Here is a very good condition LEICA GZ6 Stereo Zoom microscope. magnification range (zoom) 0.67x - 4x givng a magnification power of6.7x to 40x with the 10 eyepieces. the zoom works perfectly.
eBay
7X-45X Simul-Focus Parfocal Continuous Zoom Trinocular Stereo Microscope Head 76mm Diameter Holder
Aliexpress UK
This is a binocular 7X-45X zoom stereo microscope that gives crystal clear sharp images. The rubber eye-guards provide further comfort. The double-arm boom stand allows you to turn the microscope head around three different axes (x, y, and z), allowing you to point the microscope head toward to ANY direction.
eBay
Double Boom Stand Dual Arms Industrial Zoom Trinocular Stereo Microscope Bracket 76mm Holder
Aliexpress UK
I do also have an electronic polariscope I will include if buying this lot for gemmology or gemologist training rather than scientific research. And also a presidium gem tester. The gem tester currently isn't functioning properly.
eBay
RF4 Double Boom Zoom Simul Focal Trinocular Stereo Microscope 1080P 4K HDMI USB Microscopio Camera
Aliexpress UK
The LED gooseneck lights can be bent into various positions. Powerful 6 Watt dual gooseneck LED lights with fully adjustable intensity. 7X-45X zoom magnification power with crisp sharp images. Illumination: 6 Watt dual gooseneck lights.
eBay
3.5X-90X Continuous Zoom Stereo Trinocular Microscope + 0.5X 2X Auxiliary Objective Lens 48mp 55mp
Aliexpress UK
The stereo optics provide clear, sharp images with excellent focus-depth and a large working-distance. With 0.7X-4.5X zoom objectives, moving through the magnification range is as easy as turning a knob.
eBay
3.5-90X Zoom Trinocular Stereo Microscope Set + 2K 4K 48MP 55MP HDMI USB Pype-C VGA TF Video Camera
Aliexpress UK