30mm Focal Length 50mm Plano Convex Optics Glass Lens Magnifying Glass Lenses Magnifier Glass Lens. Optical Glass Focal Length 210mm PLlano Convex Lens. Lens Focal Length 50mm. Refractive index: 1.474.
108mm Optical Glass Aspheric Focal 190mm Plano Convex Lens LED Magnifying Lens
150mm 200mm Large Plano Convex Lens Large Magnifier Optical Glass Magnifier
Diameter 200mm/150mm 6X/8X Large Magnifier Round Glass Lens Plano Convex Lens Diameter: 150mm Material: glass Magnification:8X Object distance: 500mm Focal length: 650mm Net weight: 420g Center thickness: 15mm Edge thickness: 5mm Diameter: 200mm Material: glass Magnification:6X Object distance: 700mm Focal length:900mm Net weight: 800g Center thickness: 23mm Edge thickness: 5mm