Large amounts of dust collected on the astronauts' space suits during excursions to the lunar surface. The dust, if depositied in the Lunar Module threatened to contaminate the cabins environmental control sytem. Following the Apollo 12 mission, astronaut Alan Bean noted that they had lacked a means to remove the dust from their suits prior to entering the Lunar Module. Subsequent missions were equipped with these large brushes, which were used prior to LM cabin ingress.
This is a training item, and was not flown. It was transferred to the Smithsonian in 1974.
Transferred from NASA, Johnson Space Center.