Up for sale is a Antique Beck London Hand Spectroscope /. In it's original case. Measures 5 1/4 inches and about 2 inches wide. Longer Tube with Slit Adjustment for spectrum, & focusing tubes Scale & Spectrum.
The spectrometer has an adjustable slit and been used for many years for the identification and verification of gemstones by observation of their absorption spectrum. In its black leather covered hinged. Case lined with blue velvet and purple silk. And looks to be in good condition!
When looking through it you see the rainbow spectrum and the focus slide and slide gate work smoothly. Unit does show some wear from use. Please refer to the pictures for details. This item is in the category "Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Other Antique Science Equip". The seller is "hidaleeho" and is located in this country: US.
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