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Amazon.com: AmScope SM15 1.5X Barlow Lens for SM and/or SW Stereo Microscopes (48mm) : Electronics
Cassini 6mm, 12.5mm, 20mm, 1.5X Erector, 3X Barlow Lens 1.25 inch format eyepiece set | Free Shipping over $49!
1.5X Auxiliary Objective Barlow Lens for SZ0501, SZ0502 Zoom Stereo Microscope (48mm) | Boli Optics Microscope Store
Amazon.com : 1.25Inch Telescope Accessory Kits - 2 PLOSSL Eyepieces of Different Specifications, a 13% Transmission Moon Filter and a Cellphone Adapter with 1.5X Barlow Lens Cellphone Adapter : Electronics
Antares 1.5X Barlow with twistlock - Ontario Telescope and Accessories Inc
1.5X Barlow Auxiliary Objective Lens for Stereo Microscope Working Distance 45mm | eBay
Antares 1.25" 1.5x Barlow Lens with Twist-Lock Adapter and T-Thread # UB1.5STL | AstronomyConnect