A look at the manufacture of optical lenses, and their many uses throughout the different industries; from microscopes to spectacles to full use in the war effort.
| Actor | Role |
|---|---|
| RRonnie WaldmanCommentator (voice) | Commentator (voice) |
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A look at the manufacture of optical lenses, and their many uses throughout the different industries; from microscopes to spectacles to full use in the war effort.
| Actor | Role |
|---|---|
| RRonnie WaldmanCommentator (voice) | Commentator (voice) |