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A desktop perpetual calendar made in wood and perspex
Автор: MrParamount3
Загружено: 2020-08-17
Просмотров: 7318
Описание:
This desktop perpetual calendar is operated manually once a day by moving a lever from right to left and back again. This advances the date and day and when necessary the month.
It accounts for the differing days of the month and also leap years and will be accurate up until 2100 which is not a leap year.
The design was inspired from an original by Clayton Boyer at www.lisboyer.com
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