1/3 scale Druine Turbulent venturi

This was made from photos so may not be particularly accurate but should give a fair representation on your 1/3 scale Turbulent - or other aircraft using a similar venturi.

The vacuum tubing (left slightly long in case you want it to fit into a hole in the fuselage) is available at https://www.thingiverse.com/thing:2625450

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/5r0HL8Rr7zB