Review on Wal Front Triangular Spectrum Accessories by Terry Myers

The product's original packaging was damaged upon delivery. It was packed in a double box and the outer box was not damaged at all. Examination of the prism revealed many optical defects in the inner glass. Almost wavy lines. These lines were inside the glass, not on the surface. I bought it to do some experiments with light but due to these optical imperfections I can't do them successfully. I will send back and not get a replacement.