Brass Chart Dividers for Marine Navigation

Our brass chart dividers are essential tools for nautical navigation, used by mariners to measure distances and plot courses on marine charts. Crafted from high-quality marine-grade brass, these dividers offer outstanding durability and resistance to corrosion, ensuring reliable performance in demanding offshore environments.

Each pair features a precision-machined pivot with adjustable tension, allowing the legs to move smoothly and hold their position for accurate repeated measurements. The sharp needle-point tips ensure precise contact with the chart, enabling navigators to compare distances, transfer positions, and calculate true distances with confidence. Available in a polished, tarnish-resistant finish, they are built to withstand the rigors of daily bridge use.

Whether you are a professional ship officer, maritime student, or avid recreational sailor, these brass chart dividers are a must-have addition to your navigation toolkit. Compact and easy to store, they integrate seamlessly into any chart table setup, helping you navigate safely and efficiently on every voyage.

Key Features

Technical Specifications

MaterialMarine-grade brass
Length8 in (20.3 cm)
Weight4 oz (113 g)
Point TypeNeedle-point tips
PivotPrecision hinge with adjustable tension
FinishPolished, tarnish-resistant
ApplicationDistance measurement, chart plotting, celestial navigation

Frequently Asked Questions

What are brass chart dividers used for?

Brass chart dividers are used to measure distances and transfer positions on nautical charts. They allow navigators to compare distances between chart features against the scale bar to determine real-world distances.

How do you measure distance with chart dividers?

Place the tips of the dividers on two points on the chart, then transfer the divider span to the chart's latitude scale (or nautical miles scale) to read the corresponding distance. For longer distances, use the step method along the desired route.

Are these dividers suitable for use on a ship?

Yes, they are made from marine-grade brass, which is highly corrosion-resistant and can withstand the salty, humid conditions typically found on ships.

How do I maintain brass chart dividers?

Wipe them clean after use, especially after exposure to salt spray. Occasionally apply a light coat of brass polish to maintain the finish and keep the pivot smooth.

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