This chrome-plated 25mm lens, manufactured by Fairchild Space and Defense Systems, was used during astronaut training on the Westinghouse color TV camera that would broadcast activities on the lunar surface. Lenses for spaceflight had to be easy to use by astronauts in bulky spacesuits. They are clearly labeled for their specific use. The polished coating reflected the Sun's heat.
NASA transferred this lens to the Museum in 1973.
This object is on display in James S. McDonnell Space Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.