The 400mm Sowester Parallel Ruler is a precision tool designed for navigating yachts, sailing boats, and fishing vessels. Made in the United Kingdom, this ruler is perfect for accurately marking out parallel lines on charts or maps. Its sturdy construction and reliable performance make it a must-have accessory for any boating enthusiast or professional sailor. The Sowester brand ensures quality and craftsmanship, making this ruler a valuable addition to any sea voyage or fishing trip.
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