Amlong Crystal 2.5 inch Optical Glass Triangular Prism for Teaching Light Spectrum Physics and Photo Photography Prism, 60mm
Not for children under 3 yrs. Prism Length: Approx. 2.5 inch / 60mm
Rainbow Symphony Diffraction Grating Slides - Linear 1000 Line/Millimeters, Package of 25
Amlong Crystal Clear Pyramid 2.75 inch High with Gift Box
Amlong Crystal 6 inch Optical Glass Triangular Prism for Teaching Light Spectrum Physics and Photo Photography Prism, 150mm
EISCO Premium Quantitative Spectroscope, +/- 5nm Accuracy
Optical Glass Triangular Prism, 2 Pack 1.97 Inch Crystal Rainbow Maker for Photography Science Experiments Physics Teaching Light Spectrum
Eisco Labs Equilateral Acrylic Prisms With 1 inch Sides, Set of 3 Prisms - 1 Inch, 2 Inch, and 4 Inch Lengths
StayMax Physical Optical Experiment Set Concave/Convex Lens
Bloomoak Optical Glass Triangular Prism,with Rotatable and Adjustable Steel Stand Holder,for Teaching Light Spectrum Physics,Photography and Crystal Rainbow Maker
6pc Optical Lens Set, 2" - 200mm, 300mm, 500mm Focal Lengths - 3 Double Convex & 3 Double Concave, 2" (50mm) Diameter Lenses - Optically True Glass - Ground, Beveled Edges - Eisco Labs
Mirrors Darice Craft Mini Square, 3 inches, 5 Pieces