URL details: www.moonstick.com/index.htm#history
URL title:
Moonstick Co. - manual visual calculators for astronomy, timekeeping, and computation
URL description:
Moonstick Co. is the designer and manufacturer of manual visual calculators for astronomy, timekeeping, and computation
URL keywords:
manual visual calculator, astronomy calculator, perpetual calendar, slide rule
URL last crawled:
2022-06-13
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