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The Protractor Triangle is inscribed with black markings. Using two 45° triangles provides an easy method of plotting and performing chart work.
Used as a pair to transfer a directional line on a chart. Protractor scale allows easy alignment with chart meridian in any direction. Direction is maintained as one triangle is slid along the other to desired position. 90° angle helps determine lines of position. Crafted of clear, durable vinylite. Lifetime warranty.
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226 W. Florence Ave | Inglewood, CA 90301
We are proud to be an ISO 9001 Certified Company.