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- Authentic Models CO030 40-Year Perpetual Calendar Compass
Authentic Models CO030 40-Year Perpetual Calendar Compass
43,40€
Product Description
- Perpetual Calendar and Compass
- Brass Highly Polished
- Perpetual Calendar Covers 40 years from 2004 to 2044
- Height: 0.8 in. (2.06 cm)
- Diameter: 2.95 in. (7.45 cm)
An early, simple pocket calculator from an era when 40 years were akin to perpetual. Its origin goes back some 500 years. Calculate the day of the week for any given future date, within a 40-year span. To use, simply rotate dial until the selected year lines up with the selected month. Locate the particular date and find the day of the week above it.