Name:Diffraction grating Frame size:50x50mm Grating size:38x36mm Thickness:2mm Colour:As Shown Material:plastic style:300 line Package Contents: 1 * Diffraction Grating Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
Fruugo United Kingdom