Tungsten Bulb IlluminationMagnification: 7xDioptres: (1+F/4): 24.0DLens Diameter: 48.0mmImage Vergence: -4.0DEffective Focal Length: 41.95mmField of View on Page: 35.0mm5147 (7x) Tungsten Illumination Pocket MagnifierPart No:5147 Technical SpecificationsTungsten Bulb Illumination Magnification: 7x Dioptres: (1+F/4): 24.0D Lens Diameter: 48.0mm Image Vergence: -4.0D Effective Focal Length: 41.95mm Field of View on Page: 35.0mm
