  This paper presents a hands-on introduction to the medieval astrolabe, based
around a working model which can be constructed from photocopies of the
supplied figures. As well as describing how to assemble the model, I also
provide a brief explanation of how each of its various parts might be used. The
printed version of this paper includes only the parts needed to build a single
model prepared for use at latitudes around 52{\deg}N, but an accompanying
electronic file archive includes equivalent images which can be used to build
models prepared for use at any other latitude. The vector graphics scripts used
to generate the models are also available for download, allowing customised
astrolabes to be made.
