Product Code: 5214Description: TiltDioptres/Mag: 12D / 4.0xLens Type: Bi-AsphericLens Diameter: 80.8mmEffectiveness Focal Length: 93.26mmField of View on Page: 80mm5214 (4x) Stand MagnifierPart No:5214 Technical SpecificationsDescription: Tilt Dioptres/Mag: 12D / 4.0x Lens Type: Bi-Aspheric Lens Diameter: 80.8mm Effectiveness Focal Length: 93.26mm Field of View on Page: 80mm