Astrolabes at Greenwich is the third volume describing the collection of scientific instruments of the National Maritime Museum at Greenwich UK. The book has two sections, as the previous volumes on Globes and Sundials. Part one gives general background information on in this case the Astrolabe such as: provenance, construction, literature, art, scales, authenticity etc. The second part gives detailed descriptions and illustrations of all 53 items of the collection, including notes on authenticity and "fake" items which are to be found in this collection, but also in many collections elsewhere. Both parts are very detailed and give valuable information on the Astrolabe. Unlike the Globe and the Sundial, there are less books on this subject and not many Astrolabes are offered on the market, so there are limited possibilities to study these in detail. This book is really a mine of information on the construction and history of this noble and beautiful instrument.