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B68-77
 
 
Status: Open
Item no.: 177213949721
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Ending in: 28 days, 02:01:36
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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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28 days, 03:11:36
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B68-735
28 days, 03:11:36
B68-640
28 days, 03:01:36
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