This is a brand new 0.5X Barlow (auxiliary objective) lens for stereo/industrial microscopes. It doubles the working distance and field of view of your microscope and cuts magnification power by half. This lens comes with a 1-7/8" (48mm) mounting thread and goes with VS-1F/VS-2F/VS-3F/VS-5F/VS-7F/VS-8F/VS-9F series stereo/industrial microscopes.

Mounting size: 1-7/8" (48mm) in diameter. Cutting magnification power by half and doubling working distance and field view of the microscopes. 0.5X Barlow lens doubles working distance and field view of VS-1F/VS-2F/VS-3F/VS-5F/VS-7F/VS-8F/VS-9F series stereo/industrial microscopes.

Power Source: Battery Powered. Brand: Vision Scientific. Color: Black. Date First Available: September 20, 2018. Is Discontinued By Manufacturer: No. Best Sellers Rank: #20 in Microscope Lenses. Customer Reviews: 4.9 out of 5 stars 29 ratings 4.9 out of 5 stars. Item model number: 7.5307E+11. : B07HJF7GFB. Manufacturer: Vision Scientific. Item Weight: 3.2 ounces. Package Dimensions: 2 x 2 x 1.4 inches.