Airmar Deadrise Angle Finder - Accuracy of ± 1/2° Fender Accessories The GS-390XL has an enlongated

The GS-390XL has an enlongated base for tops up to 4” thick

Regulation - Internal/External

running light

Adjustable 2-4 ft

Airmar Deadrise Angle Finder - Accuracy of ± 1/2° Fender Accessories The GS-390XL has an enlongatedDeadrise Angle Finder Accuracy of 1 2 Accurate to 1 2 of 1, this precision instrument, with strong ceramic magnet is designed for attachment to a carpenter's square or straight edge to overcome time consuming computation of angles. Features: Quickly measures boat hull deadrise angle. Ball Bearing construction for accuracy. Attach to straight edge or framing square Handy angle and grade chart on back of unit