 The Petrovich Collection at the Canada Science and Technology Museum is a collection of over 130 mathematical instruments from the 12th century to the 19th century covering a wide geographical range of the Mediterranean region and in particular the Ottoman Empire. The collection came to us in 1980 from Dr. George Petrovich who was a Serbian-born architect who moved to Montreal. Petrovich collected these instruments over a number of decades in order to document mathematical practice, architecture, surveying in the Mediterranean and Ottoman regions. Recently, the Petrovich Collection has been the subject of a lively research project studied by Hasan Umut, a historian of Islamic mathematics and Asya Khab, an expert on the history of Islamic architecture. And one of our favorite aspects of this project has been the surprising connections created through the process of research such as connections with historians of architecture, the Serbian Embassy, and the Islamic Studies Department at McGill University.