The original finding aid described this as: Description: Candid views of the STS-41C crewmembers on the flight deck include : Mission pilot Francis (Dick) Scobee holds the Krimsky ruler against his cheekbones More
The original finding aid described this as: Description: Mission commander Robert Crippen holds a Krimsky ruler to his cheekbones as part of an ongoing Shuttle study on near vision acuity. Mission pilot Franci More