* Six slides of 1 to 6 slits
* Three gratings to match the slits
* Diffraction grating 80 lines/mm
* Diffraction grating 300 lines/mm
* Single slit - Tapered
* Double slit - Tapered
* Metal gauze - 300 mesh
* Circular apertures 1.0, 0.60, 0.40, 0.30 mm nominal diameter
* Hologram
* 2 Polaroids
* All mounted in 35mm slide frames as pictured.