Why are there two rings on the carriage rods? Tell us what you think.
Rich Gordon
Edison Phonographs Knowledge Test
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Re: Edison Phonographs Knowledge Test
Timing marks for setting speed.
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Re: Edison Phonographs Knowledge Test
JohnM wrote:Timing marks for setting speed.
I'll second that!
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Re: Edison Phonographs Knowledge Test
Yes your correct. Here’s part of an article explaining it from the July 1911 issue of the “The New Phonogram”.
Rich Gordon
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Re: Edison Phonographs Knowledge Test
In the two minute mode. Jerry