Fresnel Lens Magnifier, Diameter 150mm (5.9''), Focal Length 140mm, Acrylic Lens (not Glass), for Physics Classroom Education, Solar Heating, Magnifiying. (Focal Length 140mm) auspowers_batchthree They give you maximal options

They give you maximal options for wrapping various types of adult and children’s injuries

Battery compartment also provides a handy internal storage space for the wireless USB nano receiver when not in use

You can also moisten the paper with distilled water and place in an area where Hydrogen Sulfide is thought to be present (an acetate buffer is not necessary)

Brown Tripoli: Brown Tripoli is used for cutting & removing scratches from aluminum & stainless steel

Water- resistant labels Ideal for products that are frequently in contact with water or stored at low temperatures

Fresnel Lens Magnifier, Diameter 150mm (5.9''), Focal Length 140mm, Acrylic Lens (not Glass), for Physics Classroom Education, Solar Heating, Magnifiying. (Focal Length 140mm) auspowers_batchthree They give you maximal optionsFresnel Lens Magnifier, Diameter 150mm (5. 9''), Focal Length 140mm, Acrylic Lens (not Glass), for Physics Classroom Education, Solar Heating, Magnifiying. (Focal Length 140mm) Size: ? 150mm Thickness: 2mm Material: PMMA (acrylic) Transmission (%): 92 (from 400 1100nm) Index of Refraction nd : 1. 491 Operating Temperature (C): 80 (Maximum) Product Features 1 Pack Fresnel Lens 150mm Focal length 140mm Thickness: 2mm, Material: PMMA (Acrylic) High Light