Sherline Lathe speed scale

fcs

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Has anyone gone to the trouble of making an approximate, ballpark estimate RPM scale for the Sherline lathe speed adjustment knob? So when I get something that works well for a situation I can note it or share it?
 
This isn't for the adjusting knob but you could use it to make one.
 

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Interesting approach. I'll see if I can find an old fluorescent bulb and try it. Thanks.
 
I bought a photo tachometer from Harbor Freight. Used it to label the speeds on the different settings on the speed dial. Did this on my mini mill.
 
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