Weems & Plath #103 Protractor Triangle

Description

Often used in a combination of two, Weems & Plath's Protractor Triangle provides a straightforward method of plotting and performing chart work. Each triangle is inscribed with black markings. The protractor scale on the triangle can aid in drawing a bearing line on a chart, and the 90 angle is helpful when determining lines of position. 7-3/4" sides x 11" (19.69cm x 27.94cm) hypotenuse. 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 degree angle helps determine lines of position. Made from clear, durable vinylite. Limited Lifetime Warranty.