This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Vacuum brake applied. Schematic drawing of railway automatic vacuum brake cylinder with the brake applied Transferred from org en to Commons by User Tam using de php CommonsHelper Afterbrunel at org en technology Afterbrunel Original upload log page en Vacuumbrakeapplied Afterbrunel bytes no drawing of railway