TARDIS 2005–10, the roundels are built into hexagonal recesses in the walls. Ever since the TARDIS was redesigned at the beginning of the 2010 series, there have been a range of different roundel designs around the console room. These include circular holes that are recessed deep into the walls, hexagonal holes that are lit from behind each face, round indents with brass rings around the outside, and a glass centre that is illuminated blue. In "The Day of the Doctor", when the TARDIS' control room briefly appears as the War Doctor's room, the Eleventh Doctor points out to the Tenth Doctor
Royal Air Force roundels official sizes for roundels were: Many variations could be seen because of the problems involved in interpreting instructions or repainting aircraft in front-line service, but most production aircraft conformed to these basic dimensions. In the China/Burma/India (CBI) theatre and Pacific it was thought that the red centres of RAF roundels could be confused with the red "hinomaru" carried by Japanese aircraft. After an RAAF No. 11 Squadron Catalina was mistaken for a Japanese aircraft by a US Navy Wildcat in the Pacific Theatre and attacked, the roundels on RAAF were modified, mostly in the field, by painting over the red