One of our best selling navigation instruments, the Weems & Plath Protractor Triangle with Handle is inscribed with contrast enhancing colors making it easier to use. Utilizing two 45 degree triangles, the protractor triangle with handle provides a straightforward method of plotting and performing chart work. With its protractor scales, this protector triangle’s handle is easily aligned in any direction with a chart meridian. Direction is maintained as one triangle is slid along the other to the desired position. The protractor triangle with handle is crafted of durable and clear vinylite.