PKG (4) 2" Square Linear Polarized Filter Slide has a 1-3/8" x 15/16" Window.

Diffraction Grating Slides-Linear 1000 Line/mm

EISCO Premium Quantitative Spectroscope, +/- 5nm Accuracy

Calcite Crystal - Iceland Spar

Diffraction Gratings Slide - Linear 500 line/mm- Excellent for demonstrating the spectrum from various light sources

2.5" Amlong Crystal® Optical Glass Triangular Prism for Teaching Light Spectrum Physics 60mm

Diffraction Grating Slide - Double Axis 13,500 line/in - Excellent for demonstrating the spectrum from various light sources

High Resolution Quantitative Spectroscope - 400-700nm, +/-5nm

Polarizing Filter (6 in. x 6 in.)

Rainbow Symphony Diffraction Gratings Slides - Linear 1000 Line/millimeters, Package of 10

United Scientific 573159 Acrylic Prisms in Wooden Storage Box (Set of 6)