A tape specifically designed to hook in to the top of your Optimist mast and stay there! Easily measure the mast rake of your boat on your own.
It has never been so easy to measure and adjust your Optimist mast rake before your training or regatta. Place the special hook in the top-aft of the mast and measure the distance to the edge of the deck. The blade shows imperial units (inches) and metric units (centimeters).