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Infrared Spectrograph by Hilger
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Spectrograph by Adam Hilger & Co 1
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Infrared spectrograph by Adam Hilger & Co. London. with quartz prism, variable slit and photographic plate holder circa 1905. I have reproduced the details of this equipment from their French catalogue. length 57" (145 cm)height on cast base 14" (35.5 cm) not sure how to measure the width on a V shaped object! Transport at cost
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