Dear group, While visiting the Barcelona CosmoCaixa this spring I saw a wonderful looking astrolabe on display in the science museum gift shop.
It is the one listed below: http://www.antiquus.es/p-172/Orientacion-y-Medida/Astrolabio/Astrolabio-Arsenius-20-(dos-latitudes) This brass plated astrolabe measures 20 cm / almost 8" and it comes with two base plates for two different latitudes (41 and 45 degrees). I was very tempted to buy it but after doing some research back home I found that there are some inaccuracies in the rete and alidade design. They are pointed out in the link below (in Spanish). http://www.oagarraf.net/Comunicacions/ASTROLABI/INDEX%20ASTROLABI.html Can you sugest other working astrolabes in this price range? Dan Uza
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