Howard Covitz Twitter @hcovitz Biography I am a software developer, but prior to that I worked in the attic of the Adler Planetarium in Chicago, assisting the curator of rare, historic instruments. The Adler has, behind the scenes, the largest collection of Astrolabes this side of the Atlantic. Description The astrolabe is an astronomical calculator dating back at least 2000 years. Once you have walked through how to use the darn thing, you will appreciate firsthand just how much “they knew back then”.
