Hypatia is credited with improving upon the astrolabe. The astrolabe was used for a wide range of purposes, including determining the time, the position of the sun and stars, and for surveying.

Hypatia may have improved the hydroscope or hydrometer, a tool used to determine the specific gravity of liquids. This instrument was important for understanding the properties of fluids, useful in a range of scientific and industrial contexts.

Some sources also suggest Hypatia's involvement in refining or improving distillation apparatus, crucial for chemical processes and potentially for medical or alchemical practices. The exact nature of her contributions remains a subject of scholarly debate.