HAYEAR Monocular MAX 300X Zoom Glass Lens Adapter Digital Microscope Camera Objective C-Mount f/Industrial

Objective Magnification Power by 0.7 - 4.5X(about 10 - 300X on the 21 inch display) 1.0X C-mount adapter Working distance: 100mm-115mm Monocular 300X Industry Zoom C-mount Lens Focusing mechanism: Focusing hand wheel tightness is adjustable, focusing range 15mm & 40mm C-mount Lens: Working distance: 100-115mm zoom c-mount Lens 1.0X C-mount adapter Zoom ratios: 6.5:1 Objective Magnification Power by 0.7 - 4.5X(about 10 - 300X on the 21 inch display) Size: 24.5mm(L) * 50mm(DIA) Weight: 630g little tips: there is a cover to protect the lens from the dust on both sides of the lens, please open it when using Package Including: 1 x 300X Zoom C-mount Lens