Length 26.1 centimetres x Width 5.6 centimetres x Height 14.1 centimetres
a - Length 26.1 centimetres x Width 5.6 centimetres x Height 11.0 centimetres
b - Length 17.4 centimetres x Width 4.4 centimetres x Depth 0.4 centimetres
c - Length 8.2 centimetres x Width 5.5 centimetres x Depth 1.2 centimetres
d - Length 2.8 centimetres x Diameter 2.6 centimetres
Metal compass plane that is comprised of four parts.
a - The base of the plane is ornately shaped with moving components in the middle that can be altered with an adjustment screw. It has a fixed mouth on a base that can be adjusted to be slightly more convex with the use of another fixed adjustment screw at one end of the base.
b - The iron blade of the plane that slots into its interior, and is secured by the cap iron (part c) and the removable adjustment screw (part d) and another adjustment screw in the middle of the base of the plane for depth.
c - The cap iron that is used to secure the blade (part b) in place.
d - The adjustment screw that screws into the cap iron (part c).