| These iris diaphragms are made from tempered and blackened steel leaves mounted in a metal ring. |
| Because of cervical abnormalities, diaphragms and cervical caps may be difficult to fit. |
| Such materials have a number of uses, ranging from fluid-pump diaphragms to check valves and other peripheral equipment. |
| Consisting of a grid of iris diaphragms, the facade's surface has changing apertures. |
| These smooth action iris diaphragms are all fabricated in black anodized corrosion resistant frames containing spring-steel leaves. |
| Weathered specimens can also break along the segmental boundaries and expose additional structures, the so-called segmental diaphragms. |
