[ATM] mechanical setting circles / computer program?

["j h" <quantemlp@hotmail.com>]

Greetings,

I am planning on using mechanical setting circles on my dob that Im 
building.  I have heard of, and came across mention of computer programs, 
simply designed, that will do the math for me so all i have to do is align 
to my setting circles and off I go.  Can anybody offer some information on 
this.  I even heard something about a tape measure????

thanks

Charles Federico


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