Auxiliary Objective Lenses for Binocular Trinocular Stereo Microscope Enhance the capability of your stereo microscope with our range of auxiliary objective lenses. Designed for precision and versatility, these lenses provide various magnification options to suit your detailed observation needs. Available Magnifications: 0.3X Auxiliary Objective Lens - Working Distance: 287 mm 0.5X Auxiliary Objective Lens - Working Distance: 200 mm 0.7X Auxiliary Objective Lens - Working Distance: 135 mm 2.0X Auxiliary Objective Lens - Working Distance: 30 mm Note: The microscope is not included. Technical Specifications: Mounting Thread: 1-7/8" (48mm) Included Accessories: 1x 0.3X Microscope Auxiliary Objective Lens 1x 0.5X Microscope Auxiliary Objective Lens 1x 0.7X Microscope Auxiliary Objective Lens 1x 2.0X Microscope Auxiliary Objective Lens Additional Barlow Lenses: #1: 1x 0.5X Barlow Auxiliary Glass Lens #2: 1x 0.7X Barlow Auxiliary Glass Lens #3: 1x 2X Barlow Auxiliary Glass Lens