Byzantine Astrolabe (sort of)

In a fragment on the astrolabe attributed to John Kamateros are a handful of interesting diagrams illustrating the various parts of an astrolabe. Here is the diagram showing the rete.

An illustration of an astrolabe’s rete, found in a 15th-century Byzantine fragment on the astrolabe. (Distortion in the photo is from the way the folio bends into the binding.)

There is also diagram illustrating the plate, and two showing different views of the back of the instrument.