User:Marvin Clarence, Monarchist/International Slide Rule Museum

The International Slide Rule Museum (ISRM) is a museum dedicated to the preservation and display of slide rules and other mathematical artefacts. Established in 2003 by Michael Konshak, who serves as its curator, the museum houses a collection of slide rules from divers manufacturers and time periods, showcasing the evolution and importance of these instruments in the history of mathematics and engineering.

It is often identified to be one of the largest repository of slide rules and logarithmic calculators on the Web.