Vintage Bakelite & Brass Nautical Parallel Ruler / Chart Plotter

Original vintage parallel ruler used for nautical navigation and chart plotting. Constructed from bakelite bars with brass linkage arms that allow the ruler to slide while maintaining perfectly parallel alignment, a classic design used by navigators, engineers, and draftsmen for transferring angles and plotting courses on charts.

Previously identified as a bookbinding clamp, but this form and construction are consistent with a navigation parallel ruler rather than a press tool.

Features:

• Bakelite body with solid brass arms and hardware

• Smooth pivoting linkage mechanism

• Maintains parallel alignment when moved across a surface

• Likely mid-20th century drafting/navigation instrument

Condition:

Good vintage condition with expected age-related wear, patina on brass, and light surface marks from use. Hinged arms move as intended and remain structurally sound. Please review all photos for exact condition and measurements.

Great piece for:

• Nautical instrument collectors

• Maritime décor

• Drafting and engineering tool collections

• Vintage office or study display

Measurements:

(See photos with tape measure for exact length)

Ships securely packaged to protect the bakelite and brass components.