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B68-77
 
 
Status: Bidding ended.
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Item no.: 177213949721
Current bid: 580 ( Convert )
By user jamesrgillis5@gmail.com on 03/27/2026 17:24
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Rate: B68-77
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B68-77 PRISM SPECTROSCOPE. Used to measure spectrum wavelengths; Thomas Edison used one to help invent the light bulb and for other scientific discoveries. Marked G13 on circular brass disk that the prism is mounted on, three brass telescopes, collimator, and back lighted scale tubes. Base is japanned with three legs. Missing prism cover that usually accompanies the spectroscope. Unmarked and very uncommon. Good 500-1000

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