Some early pictures.

 

 

Loading a Debo. R16 with a 20 kg weight. A wide angle lens was used with the camera - that's the reason for the tilted lines.

 

Click the picture for an enlargement.

 

Measuring the flex at the tip (minus 2 cm).

 

Click the picture for an enlargement.

A couple of fins with the quarter point marks.

 

The straight lines on the strips of tape connects the thickest profile points at the base and at the tip (minus 2 cm).