§1 inch square, Diffraction grating film (1,000,000 lines/metre).
§Pre-cut card with self adhesive fixing pads for fast and reliable assembly.
§Assembly Instructions, but very easy to build, no gluing, no cutting.
A fantastic way to view the visble spectrum from the sun or artificial light source. The large viewing window makes this the best diffration grating spectroscope of its kind (and price), no need to squint, just study the continuum. The scope is approximately 3cm x 2cm x 4.5cm when assembled.
