The ZMC-2 was unique in that its' envelope was covered entirely in 2mm thick duralumin , an aluminium alloy. It had reinforcing ribs on the inside but was not technically a "rigid" airship in as much as its' shape was maintained by the pressure of the helium gas that it was filled with. The ZMC-2's performance was excellent throughout its' ten year operational life and it completely wore out its' first set of engines. It flew from August 1929 until August 1939 and was finally broken up in 1941.
There is a 2 mm diameter hole in bottom of the hull to fit our 3.5cm display stand
or your own support rod.