What is the primary function of a Saxon device?

The primary function of a Saxon device is to produce a rotating visual display of sparks. This device is specifically designed to create a visually captivating effect by using a combination of pyrotechnic compositions that burn in a way that produces bright and sparkly displays. Its rotation contributes to the dynamic nature of the visual effect, making it popular in special effects shows and performances.

In contrast, while some pyrotechnic devices are designed to create loud noises or launch aerial shells, the Saxon device is not intended for such purposes. Additionally, devices that function without moving parts may offer different types of visual or auditory effects, but the unique characteristic of the Saxon is its ability to generate a rotating spark display, distinguishing it from other pyrotechnic apparatuses.