Home / Forums / General melodica discussion / Photo—-Tubing and Fixture for Hohner Melodica / Reply To: Photo—-Tubing and Fixture for Hohner Melodica Reply To: Photo—-Tubing and Fixture for Hohner Melodica April 15, 2017 at 10:54 pm #8810 Paul DurhamParticipant Thought I’d drop you a line while you were active. That’S AMAZING that you can fit one tube inside the other. Evidently one company is expressing inside diameter and the second is giving the outside. Hope you are doing well with your project, Paul