A couple of nice precision engineering services photos I identified:
Steven F. Udvar-Hazy Center: B-29 Superfortress “Enola Gay” panorama
Image by Chris Devers
Quoting Smithsonian National Air and Space Museum | Boeing B-29 Superfortress "Enola Gay":
Boeing’s B-29 Superfortress was the most sophisticated propeller-driven bomber of Planet War II and the first bomber to residence its crew in pressurized compartments. Though developed to fight in the European theater, the B-29 discovered its niche on the other side of the globe. In the Pacific, B-29s delivered a selection of aerial weapons: traditional bombs, incendiary bombs, mines, and two nuclear weapons.
On August 6, 1945, this Martin-constructed B-29-45-MO dropped the initial atomic weapon utilised in combat on Hiroshima, Japan. Three days later, Bockscar (on display at the U.S. Air Force Museum near Dayton, Ohio) dropped a second atomic bomb on Nagasaki, Japan. Enola Gay flew as the advance weather reconnaissance aircraft that day. A third B-29, The Great Artiste, flew as an observation aircraft on each missions.
Transferred from the United States Air Force.
Country of Origin:
United States of America
All round: 900 x 3020cm, 32580kg, 4300cm (29ft 6 five/16in. x 99ft 1in., 71825.9lb., 141ft 15/16in.)
Polished overall aluminum finish
Four-engine heavy bomber with semi-monoqoque fuselage and high-aspect ratio wings. Polished aluminum finish general, common late-Globe War II Army Air Forces insignia on wings and aft fuselage and serial quantity on vertical fin 509th Composite Group markings painted in black "Enola Gay" in black, block letters on lower left nose.