Vintage: Dale Electronics Competitors Comparison Slide Rule - OHMS Calculator
Slide Chart copyright 1968 PERRYGRAF -- Printed in U.S.A. -- Slide rule 4" x 9 3/8"
USPS shipping.
Thanks for looking.
Combined Shipping: To combine shipping fees for the purchase of multiple items you can select Request total from seller in your shopping cart. Then, I will send you an invoice with the new combined shipping costs.