Only one example of the design was constructed.
Ultimately from first to last, a total of 485 examples were constructed between 1943 and 1964.
Only one example was constructed which was damaged beyond repair.
Only one example of the design was constructed, and it ended its career in a fatal crash in 1971.
This example has been constructed to give reasonable compression on a very short message.
Development beyond the prototype stage was not pursued and only one example was constructed.
An example of a temporary venue would be one constructed for a music festival.
The first example of such a surface was constructed by .
Many examples have been constructed to illustrate this problem.
The first working example was later constructed by Richard Good in 1978.