1952 Pioneer TV Signal Range Calculator - Slide ruler with directions - Epperson For Sale

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1952 Pioneer TV Signal Range Calculator - Slide ruler with directions - Epperson:
$97.50

I have never seen this before, not even on . Like a wooden slide ruler, with case and direction sheet (folded). Good shape. marked 1952 J.B. Epperson Co.
see all pictures. I would imagine rare.
as found, from ham radio estate. Thank You
Please see all pictures and use zoom feature. Often the pictures describe the item better than words.!
Also please see the 10,000+ vintage radio related parts and other great antiques and oddities I listed.
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I always combine shipping to my best, just order and wait to get the invoice from me. On Global Shipping I cannot combine as that is in 's hands.
Please note : is starting to collect sales tax as required by law for certain states.
Thank you for you order and please follow my store.! New items added daily. Also you can go into my store and pick the category for easy shopping. Best to you and Many Thanks, Mike