MagniTouch magnifier with 3x power touch activated loupe, with 3 super bright LED lights and a crystal clear glass lens, Magnification: 3x, Batteries: 2 CR2016 (included), Accessories: Zip case & microfiber lens cloth, with on/off switch, Dimensions: 3.75 x 3.75 x 1.8in
Hollow Acrylic Prism, cube, With Stopper - For Physics and Light Experiments, Hollow inside allows for liquid to be poured into cube, Great for physics classrooms, made from acrylic plates properly cemented together, Excellent tool for optical experiments, Size: 25x25x25mm