Concise Circular Slide Rule with Science Periodic Tables Sama & Etani with Case

Description

I'm listing this Concise Circular Slide Rule with Periodic Science Tables made by Sama & Etani. Included are the circular rule with the periodic tables on the back along with a pull out plastic page with more tables with all easy to read. Included are the instruction booklet and a vinyl blue case in great condition.
Please see ALL the photos before buying or bidding, and yes, we do combine shipping.
Buyer pays shipping and handling. We ship within 3 days of receiving cleared payment.