Weems & Plath Aluminium Arms Parallel Ruler 18in
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*See here for full T&CThe 18-inch (45.72cm) Aluminum Arms Parallel Rules feature aluminum arms that join two clear acrylic rulers enscribed 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 rulers are connected to maintain the same angle. By walking the rules across the chart and securely holding down the non-moving ruler, you can effectively plot a course
Features:- 18-inches (45.72cm) long
- Protractor scale
- Sturdy clear acrylic with aluminum arms
- Protective plastic sleeve
- Lifetime warranty
strong>Specifications:
- Length: 18 in (45.72 cm)
- Width: 2.6 in (6.6 cm)
- Height: 0.5 in (1.27 cm)
- Dimensions: 1/4' (5 mm) thickness; 18' (457 mm) length
- Weight: 0.5 lb (1.27 cm)
- UPC Code: 721002001382
- HTS Code: 9017.80.0000
- NSN: 6675-01-573-2795