#103 Protractor Triangle Rat Islands are indispensable companions to charts

are indispensable companions to charts

Flag of the Czech Republic

Flag of the Commonwealth of Dominica

Rust proof

Chart Image Size: 41⅜" x 30½"

#103 Protractor Triangle Rat Islands are indispensable companions to chartsWeems 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