3-Piece Acrylic Lens (convex, concave, trapezoid) laser pointer 5) Full periodic table with

5) Full periodic table with atomic number reference in each period (row)

hands-free on-off switch

For a smaller office-sized version

making it the most visible FDA-approved green laser available

3-Piece Acrylic Lens (convex, concave, trapezoid) laser pointer 5) Full periodic table withA 3 pack of acrylic lenses with polished sides perfect for classroom discovery experiments in optics! It includes: One biconcave lens (2. 3" x 0. 8") One biconvex lens (2. 3" x 0. 8") One trapezoidal prism (3. 0" x 1. 5") If you're used to doing gelatin lens molds, this set will save you so much time, messy cleanup, and ultimately will save money after many years of use! These lenses are included in the Tech Light Lab kit. Grab the full kit to bundle