Manufacturer of diffraction gratings, spectroscopes and educational science equipment
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TE219 (9 Slides) * Six slides of 1 to 6 slits TE219A/14(14 Slides) * Six slides of 1 to 6 slits
TE219A(18 Slides) * Six slides of 1 to 6 slits TE219B(13 Slides) * Six slides with clear apertures in the shape of letters O T, Y Q, I A, L X, H Z, K V. A random array of square holes A regular square array of round holes A random array of round holes A regular hexagonal array of round holes |
These are all individually mounted in slide frames
and protected by two glass plates. |