Check the listing for details. Concise 100829 Ruler Circular Slide Rule 300 Diameter 110mm From Japan. Condition: New. Listed at 43.23 USD. Concise 100829 Ruler Circular Slide Rule 300 Diameter 110mm From Japan Description Brand new Circular Slide Rule 300 Brand: Concise Style: 300 [Size] Diameter (approx.) 110mm [Main material] vinyl chloride Product description Similar to No.270N, this slide rule is capable of a wider range of calculations than just general calculations other than addition and subtraction (multiplication, division, squaring, cubing, etc.). In addition to general calculations, it is an excellent slide rule that can calculate logarithms, high powers, trigonometric functions, cubes, squares, etc. ○ Calculations that can be done: general multiplication and division, proportional (exponential percentage), square, cube, logarithm, high power, and trigonometric functions. ○Scale: K, A, D・C, CI, B, L (Front)・LL3, LL2, D・C, S, T1, T2, ST (Back) ○ Dedicated storage case, instruction manual included Payment Please check detail of payment methods. Shipping I send a product by DHL or FedEx or Japan Post (EMS/Air Mail).I attach the tracking number.Shipping is only available to the address registered in ebay.Please note that any address not registered in ebay is not acceptable to ship. Shipping is available from Monday to Friday.Weekends are not available because post office is closed. Returns Cancellations & ReturnsCancellation & Returns will be accepted only if the item has obvious problem that was not mentioned in the listing description. If that, please let me know within 3 days after you received the item. Buyers are responsible for shipping costs and any charges incurred shipping products back.International Buyers Please Note International Buyers - Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up.- do not confuse them for additional shipping charges. About UsWe will deliver Japanese culture to the world. We will provide good quality goods of Japan with good price. If you have any questions, please feel free to contact us. In addition, we have many products not on the list, so please check from time to time.