#103 Protractor Triangle Chemical Data Guide

#103 Protractor Triangle Chemical Data GuideWeems and Plath Item #103 The Protractor Triangle is inscribed with black markings. Using two 45 triangles provides an easy method of plotting and performing chart work. Overview 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

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including the Faeroe Islands

Chart Image Size: 23" x 33"

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Edition Date: 31-Aug-2007

Chart Image Size: 15⅞" x 23¼"

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