Structural Investigation and Economical Assessment of the Designed Automatic-Brake-Pad Thickness-Checking Machine oleh Muhammad Faiz Dzulfiqar, Aditya Rio Prabowo, Fitrian Imaduddin, Indri Yaningsih, Dominicus Danardono Dwi Pria Tjahjana, Wibawa Endra Juwana, Takahiko Miyazaki, Joung Hyung Cho