- [nb-NO]Object number[nb-NO]2002.111
- [nb-NO]Title[nb-NO]Perpetual Calendar, 18th Century.
- [nb-NO]Creator[nb-NO]
- Perpetual calendar, 18th century, handmade by James Agg. Ruled grid has numbers 1-31, with slits on the left for a paper strip showing days of the week. Beneath grid is a list of the old and new quarter days.
- [nb-NO]Production period[nb-NO]18th century
- [nb-NO]Object name[nb-NO]
- [nb-NO]Material[nb-NO]
- [nb-NO]Dimensions[nb-NO]
- l: 150mm
- w: 115mm
- l: 220mm
- w: 12mm
- James Agg