Digby Antiques (Wiltshire) has dated this piece to the 19th Century.
This dock rent rule was used to calculate the number of weeks between any two chosen dates.
This is in good antique condition, all the figures, dates, months all clear. Brass sliding rule works well. There are two small slivers of wood missing, but this rule is a rare item.
L 40.5 cm
W 5.3 cm
D 0.8 cm
Digby Antiques (Wiltshire) has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Digby Antiques (Wiltshire) Profile Page