RECTANGULAR BLOCK || Rectangular block made from imported optical glass with optically worked surfaces. All angles accurately worked with edges slightly beveled. Bubble free glass 3 LENGTH || Block measures 3 long, 1.5 wide and is 0.7 thick PHYSICS EXPERIMENTS || Excellent for physics classrooms. Ideal for a variety of experiments in refraction and reflection PHOTOGRAPHY || Great for photography lighting and distortion effects MANUFACTURED BY EISCO LABS || Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind UPC 849230043940 ASIN B01BW05K1K Size 3 inches x 1.5 inches x 0.7 inches Color Colorless Theme Educational Brand Name EISCO Model Name Rectangular Refraction Block Item Weight 6.4 ounces Manufacturer Eisco Model Number PH0566B Material Type Glass Product Style Modern Container Type Block Item Type Name Rectangular Refraction Block Operation Mode manual Item Dimensions 3 x 2.05 x 0.74 inches Number of Items 1 Number of Packs 1 Package Quantity 1 Number of Players single player Included Components Rectangular Refraction Block Indoor Outdoor Usage Indoor Customer Package Type FFP Educational Objective Learning and experimentation in physics and optics, photography effects Item Dimensions L x W 3 L x 1.5 W Manufacturer Part Number PH0566B Global Trade Identification Number 00849230043940 Other Special Features of the Product Optically worked surfaces, bubble free glass, ideal for physics classrooms, refraction and reflection experiments, and photography lighting/distortion effects