| The Drosophila compound eye contains around 800 individual ommatidia, arranged in a regular hexagonal pattern. |
| By contrast, the central region of Macrobdella Hb contains a hexagonal toroid at a resolution of 4 nm. |
| Their molds demonstrate that lenses were numerous, biconvex, hexagonal in outline and arranged in an hexagonal close-packing system. |
| The beryl inclusions occur as acicular to hairlike crystals of aquamarine, pale bluish-green in color and clearly hexagonal in cross section. |
| Examples of IVA tools are various sizes of wrenches and sockets, hexagonal, Phillips, and torque head drivers, pliers, and ratchets. |
| The hexagonal belfry contains six louvers with pointed arches and is crowned by an octagonal lantern and a copper dome. |
