Fine Victorian Ebony, Ivory and brass 18 inch rule.
The rule has a sloping ebony edge backed with brass and a brass edge with an ivory scale divided into inches and eights of inches.
The rule is very well made with exposed brass rivets as a decoration along the ebony edge.
Circa (1870)
Length 45.8 cm (18 inches)
Width 5.4 cm (2.2 inches)
Depth 0.8 cm (0.3 inches)