Weems and Plath 18 inch Bi-Rola Ruler

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Weems and Plath 18 inch Bi-Rola Ruler

The Weems & Plath 18 inch Bi-Rola Ruler was designed with the professional in mind.

Built to take the rigorous use to be expected on-board commercial and blue water vessels, the 18 inch Bi-Rola Ruler provides one of the easiest methods invented to date of plotting courses.

  • Patented four-way rolling motion
  • Roller body has protractor markings every 1/2°
  • 1 1/4-inch magnifying lens for enhancing chart data
  • Easy-to-follow instructions
  • Packaged in protective, durable vinyl pouch
  • Size: 19 5/8 x 3 5/8 x 1 1/4 inches (499 x 92 x 32 mm)
  • Weight: 1.625 lb (737 g)
Product description

Weems and Plath 18 inch Bi-Rola Ruler

The Weems & Plath 18 inch Bi-Rola Ruler was designed with the professional in mind.

Built to take the rigorous use to be expected on-board commercial and blue water vessels, the 18 inch Bi-Rola Ruler provides one of the easiest methods invented to date of plotting courses.

  • Patented four-way rolling motion
  • Roller body has protractor markings every 1/2°
  • 1 1/4-inch magnifying lens for enhancing chart data
  • Easy-to-follow instructions
  • Packaged in protective, durable vinyl pouch
  • Size: 19 5/8 x 3 5/8 x 1 1/4 inches (499 x 92 x 32 mm)
  • Weight: 1.625 lb (737 g)
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