Diffraction Kit, transparency, set of SINGLE SLITS.
Slit widths: Upper row, 'A' to 'F': 0.025, 0.050, 0.075, 0.100, 0.125, 0.150mm Lower row, 'G' to 'L': 0.175, 0.200, 0.225, 0.250, 0.275, 0.300mm
Brand : IEC