Monthly Measure perpetual calendar
Monthly Measure black

Monthly Measure

Monthly Measure is both a perpetual calendar and ruler. The star is positioned on the serrated side of the ruler to show the day and date in the month and the date is easily changed by rolling the star along the ruler. Dates are placed every centimetre so Monthly Measure can also be used as a 30cm metric ruler.


Manufactured by L’Atelier d’exercises

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