Concise Ruler Circular Slide Rule 270N 100812 Dedicated Storage Case Included. Concise Ruler Circular Slide Rule 270N 100812 A slide rule that can perform a wider range of calculations than just general calculations other than addition and subtraction multiplication, division, squaring, cubing, etc. You can also calculate cubes, squares and trigonometric functions.
Types of calculations: general multiplication and division, proportional (exponential percentage), square, cube and trigonometric functions. Scale: A, D, C, CI, B, K, L (front), DI, D, S, T1, T2, ST (back)?About other area, please ask me. International Buyers - Please Note. We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior.