Note 21 — Front matter
Reading edition
I acknowledge with thanks to the Curator of that museum the permission to reproduce photographs of this instrument. It is item 5 in R. T. Gunther, Astrolabes of the world, Oxford, 1932.
Reading edition
I acknowledge with thanks to the Curator of that museum the permission to reproduce photographs of this instrument. It is item 5 in R. T. Gunther, Astrolabes of the world, Oxford, 1932.