Aluminum overlay magnifier. Lens diameter: 1 3/16” (30 mm). Viewing surface 13/16” x 13/16” (20 mm x 20 mm) with integrated inch- and mm-scale for easy measuring. 8X magnification. Optimal illumination from 3 white LEDs. Includes 2 AA batteries and padded protective case. Lens diameter: 1 3/16” (30 mm). Viewing surface 13/16” x 13/16” (20 mm x 20 mm) with integrated inch- and mm-scale for easy measuring. 8X magnification. Optimal illumination from 3 white LEDs. Includes 2 AA batteries and padded protective case. Lens diameter: 1 3/16” (30 mm). Viewing surface 13/16” x 13/16” (20 mm x 20 mm) with integrated inch- and mm-scale for easy measuring. 8X magnification. Optimal illumination from 3 white LEDs. Includes 2 AA batteries and padded protective case.;