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Bi-Rola Rule Bi-Rola Rule

Bi-Rola Rule


$75.00 $67.50 Captain's Price!
(WP) 155
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Our Very Best!
The Bi-Rola™ rule represents Weems & Plath®'s efforts to provide the very best plotting tools. Constructed of heavy duty plastic with brass rollers, the Bi-Rola™ rule is built to withstand years of trouble free use, The Bi-Rola™ rule's patented vertical and horizontal rolling motion simplifies course and plotting calculations, while the unique radial arm allows you to automatically include compass corrections in your course plotting. All together, the Bi-Rola™ rule is the most completely self-contained plotting device in its class.
Features:
  • Patented four-way rolling motion
  • Roller body has protractor markings and a nautical mile scale
  • Radial arm has Loran interpolator scales and 200 millimeter rule
  • Automatic compass corrections When radial arm and body are used jointly, the Bi-Rola™ rule becomes a 440 mm (17") divider (approximately)
  • A speed/time/distance table is included
  • Easy to follow instructions
  • Comes packaged in a protective, durable vinyl pouch

Dimensions: Length 13-7/8", Width 2-5/8", Thickness 1". Weight: 12 oz.



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