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Weems & Plath Aluminum Arm Parallel Ruler, 18in
Weems & Plath Aluminum Arm Parallel Ruler, 18in
SKU:WAP-138
50 in stock
Regular price
$49.99 USD
Regular price
Sale price
$49.99 USD
Unit price
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per
Shipping calculated at checkout.
The 18-inch (45.72cm) Aluminum Arms Parallel Rule feature aluminum arms that join two clear acrylic rulers inscribed with a protractor scale. An essential item in any proper navigation kit, these rules are used to plot direction on a nautical chart from any convenient meridian or compass rose. The two straight-edged rules are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non-moving rule, you can effectively plot a course.
- 18-inches (45.72cm) long
- Protractor scale
- Sturdy clear acrylic with aluminum arms
- Protective plastic sleeve
- Lifetime warranty
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