| People hurried through the walls, apparently careless of the delicate instruments everywhere. |
| It was based on polar coordinates whereas earlier instruments were based on cartesian coordinates. |
| Among the principal musical instruments are tam-tams, pottery drums, goat-horn whistles and flutes, and gourd-cala-bash horns. |
| Other instruments used included rattles, whistles, flutes, mouth harps, and stringed-instruments constructed with a bow and resonator. |
| The construction of astronomical instruments such as the astrolabe was also a speciality of the Arabs. |
| Traditional musical instruments included rattles, which were prominent in ceremonies. |
