The RetroChron calculator chronograph limited to 500 pieces with a massive 55mm (2.7 inch) case. The clock is equipped with a calculator. For multiplications and divisions, the calculator uses the principle that the sum of the logarithms of two numbers is equal to the logarithm of the product of the two numbers: log(a)+log(b)=log(a b). With the help of the scales that can be moved relative to one another, multiplying and dividing is done in a row or Addition (or subtraction) of two logarithmically defined lengths reduced. Calculations for fuel consumption or range can be carried out. RetroChron watches are milestones in their quality and are manufactured according to the latest technical standards to meet the highest demands. We source our goods from business and warehouse liquidations. T.
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