Vintage Sema & Etani circular slide rule w/ case, manual and documentation

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Vintage Sema & Etani circular slide rule w/ case, manual and documentation:
$52.00

Up for offers is this EVER POPULAR circular Slide Rule set.This is the Sama & Etani CONCISE #600 w/ ref insert CE.This set comes with the rule, insert card, original instruction manual,plastic carry case and a chart of the periodic table of elements.
The rule is in Very Good Used condition.No extraneous markings are noticed.No cracks or scratches on the rule or thecursor.The body is about 3\" x 4 1/4\" while the rule is 2 1/4\" diameter.The reverse has a chart of the periodic elements (up to #103)while the insert card has reference info on velocity, energy, pressure, flow rate and Gas constant values on one side.and volume, mass, force, length and area info is on the other side.
The plastic case is in Excellent Used condition.There are no extraneous markings inside or out.The gold embossed logo issharp and bright.
The32 page instruction manual circa CR 1968is in Very Good condition No extraneous notes or tears.It does have a punch hole through the booklet.
Included in this listing is an 17\" x 11\" reference chartof the periodic table with info up to #118.
I always ship by USPS Priority Mail to avoid delays.Your purchase will be insured against lost or damage.