AmScope SM15 1.5X Barlow Lens for SM and/or SW Stereo Microscopes (48mm) music_update_2020 keep some things from slipping

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AmScope SM15 1.5X Barlow Lens for SM and/or SW Stereo Microscopes (48mm) music_update_2020 keep some things from slippingAmScope SM15 1. 5X Barlow Lens for SM and or SW Stereo Microscopes (48mm) This is a brand new 1. 5X Barlow (auxiliary objective) lens for SM and or SW series stereo microscopes. It increases the magnification power of your microscope by 1. 5 times. This lens comes with a 1 7 8" (48mm) mounting thread and goes with SM and EM series stereo microscopes. Its retail value is $180. Product Features 1. 5X Barlow (auxiliary objective) lens for SM and or SW