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Hand spectroscope

Rayner hand spectroscope
Nickel plated brass hand-held spectroscope (length 98 mm till 108 mm when pulled out). The slit on the front is operated with the lever. It fits in its dark blue leather-covered hinged case covered with blue velvet Signed "Rayner | 1190 | Made in England"
late 50s early 60s

Collection: private collection