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Weems & Plath
12" Brushed Aluminum Arm Ruler

This sturdy 12-inch (30.48cm) parallel ruler with brushed aluminum arms is enscribed with a protractor scale. It is 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. 

  • 12-inches (30.48cm) long
  • Includes protractor scale
  • Brushed aluminum arms
  • Polished aluminum handle
  • Milled acrylic with beveled edges
  • Protective plastic sleeve
  • Lifetime warranty

  • Length: 12 in (30.48 cm)

    Width: 2.5 in (6.35 cm)

    Height: 0.5 in (1.27 cm)

    Weight: 0.4 lb (1.27 cm)

    UPC Code: 721002001405

    HTS Code: 9017.80.0000

Weems & Plath 12" Brushed Aluminum Arm Ruler
#NWP140 List Price $20.99Only $18.99