https://www.vanleestantiques.com/product/hand-spectroscope-by-penrose-co-ltd/
Hand Spectroscope By Penrose & Co Ltd. - Van Leest Antiques
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https://www.curiousscience.com/props/hand-spectroscope-P1692.html
Hand spectroscope | CURIOUS SCIENCE
Hand spectroscope prop for hire. We have a large selection of Optical props for hire from our London prop house
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