Check the listing for details. Rare Vintage Soviet Arithmetic ruler Calculator Mechanical Slide Addiator USSR. Condition: Used. Listed at 45.00 USD. Hello dear friends! Please see my lots. If you have any questions please contact me. I will be glad to help you! I present to your attention the rare Calculator Mechanical Slide Addiator. The calculator is in vintage working condition with traces of time, spots, scratches, dents and chips. The kit includes: 1. Slide Addiator2.Ruler case. A great item to add to your collection. Please see the photo is what you get. We ship to worldwide. Delivery by registered airmail from Uzbekistan 1 - 3 working days after receipt of payment. Delivery from Uzbekistan is 2-9 weeks to any country. I send goods only by registered mail.All parcels are tracked. We give you the track number and attach a photo invoice about the payment in the postal offise.