Davis Instruments Parallel Rule No 061 Clear 15 Inch Navigation Chart Plotting

Davis Instruments #061 15\" Clear Course Charting Parallel Rule Navigation Tool

Brand: Davis Instruments

Model/MPN: 061

Type: Parallel Rule / Navigation Ruler

Length: 15 inches (38 cm)

Material: Transparent Acrylic / Plastic

Country of Manufacture: United States

Up for sale is a genuine Davis Instruments Model 061 Parallel Rule, an essential plotting instrument for marine navigation, drafting, and charting. Precision-molded for highly accurate straight-line plotting, this 15-inch ruler features a transparent, clear optical finish that allows you to see charts clearly underneath.

Equipped with prominent, built-in contoured grip handles on each blade for smooth sliding and linking adjustments.

High-quality construction featuring overlamination to preserve durability during long-term use.

Connecting bars shift smoothly. Please see photos for cosmetic detail.