Ruler Magnifier/DB218: 1. material: PVC 2. size: 160X37mm 3. thickness: about 0.45mm 4. magnification: 3X

fresnel magnifier as bookmark and can be ruler when printed with scale

light weight, low price, convenient bring.

Customers' logos/designs can be printed on the lenses

Ideal for reading and good for propagandizing your company and brand.