THE CALCULATOR REFERENCE
THE CALCULATOR REFERENCE
Description: Moonstick Co. is the designer and manufacturer of manual visual calculators for astronomy, timekeeping, and computation
slide rule (25) perpetual calendar (9) manual visual calculator astronomy calculator
About the Moonstick Co. History Current Products Contact Moonstick Co. History The Moonstick Co. was founded in September of 1997 with the invention of our flagship product, the moonstick , a slide rule that could calculate moon phases. You can see the original patent here. The original moonsticks were made of paper and sold outside of planetarium shows during the late 1990's for $5. (These "paper" moonsticks will soon be reintroduced as a cheaper alternative to the currently available moonstick.) In
THE CALCULATOR REFERENCE
THE CALCULATOR REFERENCE