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Weems 18" Aluminium Arms Parallel Rule

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Inscribed with full 180 degree protractor markings. The middle of the bottom edge forms the protractor center when the arms are closed. This tool combines the essential features of a protractor plotter and a basic parallel ruler. Allows courses to be measured from a convenient meridian. 18 inch length, 0.19 thickness, aluminum arms and handles.
$40.99
Catalog# WP138

Inscribed with full 180 degree protractor markings. The middle of the bottom edge forms the protractor center when the arms are closed. This tool combines the essential features of a protractor plotter and a basic parallel ruler. Allows courses to be measured from a convenient meridian. 18 inch length, 0.19 thickness, aluminum arms and handles.