Concise 100973 Ruler Circular Calculator 28N

This is an English specification product of "calculation scale No.27N" (this is the most popular circular measuring measuring measuring that is not added, subtraction, and it is a basic calculation scale that can be easily calculated such as multiplication, division, quadruple and triplysis, and is used in all fields. Calculation type: General exclusion, proportional (exponent hundred ratio), square and cu. Reverse side: Length and area, volume, mass, temperature, pressure, speed, etc. are listed for unit conversion Scale: D, C, CI, A, K (surface) Dedicated storage case, instruction manual included. Size: Diameter: Approx. 3.3 inches (84 mm) Main Material: Vinyl chloride