Retrochron Xxl Military Watch Slide Rule Chronograph Ø 55mm Quartz Watch

Details:

RetroChron calculator chronograph limited to 500 pieces Description: Here is the mother of all pilot chronographsThe new RetroChron Calculator chronograph limited to 500 pieces with a solid 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 tha...