Isomars Professional 18-inch marine parallel ruler with brass joints, acrylic body, and protective cloth cover

Isomars Marine Nautical Parallel Bar 18 Inch | Acrylic Navigation Parallel Ruler with Brass Joints for Chart Plotting

The Isomars Marine Nautical Parallel Bar 18 Inch is a professional marine navigation parallel ruler designed for accurate chart plotting, bearing transfer, course alignment and nautical navigation. Its precision construction makes it an essential instrument for marine professionals, maritime students and anyone involved in nautical chart work.

Measuring 450 × 70 × 5 mm (18 inches), this parallel bar provides a practical working length for transferring courses and bearings across nautical charts. The large transparent body allows users to clearly see chart details underneath the instrument, supporting accurate positioning and alignment.

The parallel bar is manufactured from high-quality transparent acrylic for durability and excellent visibility. Its precision brass joints provide smooth and stable parallel movement, helping maintain accurate alignment while transferring bearings, drawing parallel navigation lines and plotting courses.

The instrument also features clear markings to assist with accurate chart work and technical measurements. Its smooth movement and rigid construction make it suitable for repeated use in navigation training, professional marine chart work and onboard plotting.

For convenient storage and portability, the 18-inch marine parallel bar comes with an individual cloth storage cover, helping protect the instrument when not in use and making it easier to carry between classrooms, training facilities, offices or onboard environments.

The Isomars Marine/Nautical Parallel Bar is suitable for sailors, marine navigators, naval officers, yacht captains, deck cadets, maritime students, surveyors, architects and technical professionals who require a reliable instrument for precision parallel plotting.

Clear visibility. Smooth movement. Accurate parallel plotting. Built for nautical chart work.

Key Features

• PROFESSIONAL MARINE PARALLEL BAR: Precision navigation ruler designed specifically for nautical chart work, marine plotting and bearing transfer.
• 18-INCH WORKING LENGTH: Measures 450 × 70 × 5 mm, providing a practical working size for plotting and transferring courses across nautical charts.
• PREMIUM CLEAR ACRYLIC: Transparent acrylic construction provides excellent visibility of chart markings while maintaining durability and rigidity.
• PRECISION BRASS JOINTS: High-quality brass linkage joints enable smooth, stable and controlled parallel movement.
• ACCURATE BEARING TRANSFER: Designed to transfer bearings, courses and parallel lines accurately between different points on a navigation chart.
• CLEAR CALIBRATION MARKINGS: Integrated markings support accurate alignment and chart plotting.
• SMOOTH PARALLEL MOVEMENT: Precision construction allows consistent movement while maintaining parallel alignment.
• INDIVIDUAL CLOTH COVER INCLUDED: Supplied with a protective cloth storage cover for convenient storage, transport and onboard use.
• VERSATILE PROFESSIONAL APPLICATION: Suitable for sailors, marine navigators, naval officers, yacht captains, maritime students, surveyors, architects and technical drafting professionals.

What's Included

• 1 × Isomars Marine/Nautical Parallel Bar – 18 Inch
• 1 × Individual Cloth Storage Cover

Product Specifications

Ideal For

• Marine Navigation
• Nautical Chart Work
• Chart Plotting
• Bearing Transfer
• Course Plotting
• Marine Training
• Navigation Classes
• Maritime Students
• Deck Cadets
• Sailors
• Naval Officers
• Yacht Captains
• Surveyors
• Architects
• Technical Drafting Professionals