A very large original blueprint of part of the MESA. The initials MESA stands for Modularized Equipment Stowage Assembly. This was basically s storage cabinet for tools that was tucked away in the base of the lunar module. When the astronauts exited the Lunar Module to carry out experiments, they would pull on a wire and the MESA would hinge down from the side of the LM and the tools that they needed to carry out their tasks were stored there ready to use
An image showing the deployment mechanism
A Picture of the deployed MESA
A very nice scale model showing the location of the MESA
A NASA image showing the tolls that were stored in the MESA