Added Dimensions of Telescopic Pole Levels

Level for Pole Series 1 and Travel Pole - Inner dimensions:
32 mm with an included plastic insert (dimensions of the biggest Pole Series 1 segment)
36 mm without the included plastic insert (dimensions of the upper segment of the lower extension pole)

Level for Pole Series 2 - Inner dimensions:
39.5 mm with an included plastic insert (dimensions of the second biggest segment of the complete Pole Series 2)
43.5 mm without the included plastic insert (dimensions of the biggest segment of the complete Pole Series 2)

The dimensions are the same for both classic levels and the advanced levels with a mirror.

You can find pole levels here.