The spaces between the outer glass doors and the inner steel ones measured approximately three feet.

He is replacing the buildings' old balconies with stainless steel ones.

Some pieces also had their wooden wheels replaced by steel ones with rubber tires.

But the major design change was to replace the aluminium flanges by steel ones.

He preferred old-fashioned quill pens to the new steel ones.

On others, the devices had no strengthening plates, and steel ones were to be installed.

The first were made of canvas on a framework, then steel ones were used.

The stainless steel ones, if properly made, should last over 2,000 uses.

Ceramic bearing balls can weigh up to 40% less than steel ones, depending on size and material.

As such all of the signs on the campus buildings were removed and replaced with new stainless steel ones in which the phoenix looked right.