File:Counting rod v-1.pngstring: Takasugi Shinji Wikimedia username: Takasugi Shinji URL: https://commons.wikimedia.org/wiki/user:Takasugi_Shinji determination method: SHA-1
File:Counting rod v-3.pngusername: Takasugi Shinji URL: https://commons.wikimedia.org/wiki/user:Takasugi_Shinji author name string: Takasugi Shinji determination method: SHA-1
File:Counting rod v-8.pngusername: Takasugi Shinji author name string: Takasugi Shinji URL: https://commons.wikimedia.org/wiki/user:Takasugi_Shinji determination method: SHA-1
File:Counting rod v-6.pnghttps://commons.wikimedia.org/wiki/user:Takasugi_Shinji Wikimedia username: Takasugi Shinji author name string: Takasugi Shinji determination method: SHA-1
File:Counting rod v-2.pnghttps://commons.wikimedia.org/wiki/user:Takasugi_Shinji author name string: Takasugi Shinji Wikimedia username: Takasugi Shinji determination method: SHA-1