| There are examples of astrolabes with artistic pointers in the shape of balls, stars, snakes, hands, dogs' heads, and leaves, among others. |
| Metal astrolabes were heavier than wooden instruments of the same size, making it difficult to use them in navigation. |
| She was well known for her development and construction of astrolabes. |
| Universal astrolabes can be found at the History of Science Museum in Oxford. |
| He was also renowned for his scientific instruments, particularly his astrolabes and astronomical rings used to study the geometry of astronomy and astrology. |
| In 1730 the sextant was invented and navigators rapidly replaced their astrolabes. |
