Their long lives (especially in later rebuilt form) suggest robust and trouble-free construction.

The Hobie 16 is noted for its particularly robust construction.

The M1935 is a very robust construction with long service life if properly maintained.

The drums could withstand the pressure by virtue of their robust construction.

The skull of Hatzegopteryx was also unique in its heavy, robust construction.

The boiler has the advantage of simple robust construction, in particular requiring little regular maintenance.

Miele products are known the world over for their robust construction.

The geared turbines also had a significantly more robust construction.

As these models are fully intended to be used and handled, more robust construction is key.

Of simple and robust construction, they also had relatively benign flying characteristics.