code LEMM 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. 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 in Beech wood and cast aluminium. Star has day initials in English on one side and French on reverse.