Free fall tube SE, L35 cm with falling bodies

For demonstrating free fall in a vacuum, suitable for attaching to the lid of the P1520-2G vacuum chamber;
Drop tube made of acrylic glass, with silicone seal and drop bodies (one ball each made of metal, polystyrene and wool as well as a small piece of a chicken feather)
Dimensions: Da=50 mm, L=350 mm
Mass: approx. 304 g

additionally required:
P1520-2G Vacuum chamber complete 1000 ml, with manometer