Battenberg Course Indicator

train speed calculator in 1892

en-GB/bætnbɜːɡ ˈkɔːs ˈɪndɪˌkeɪtə/
en-US/ˈbætənˌbɝɡ ˈkɔɹs ˈɪndəˌkeɪtɚ/

หมวดหมู่:

mechanical computer