shows side view of the assembly with brakes released where the clevis pin is in alignment with the release indicator with the logger indicator at the same fig4 shows side view of the same assembly positioned about half way into the stroke and clevis pin indicator pushing the logger indicator forward fig5 shows side view of the same assembly in the brakes released position where the clevis pin is again in alignment with the release indicator but the logger indicator remains in a position showing the longest applied stroke travel fig6 shows side view of the assembly with brakes released where the clevis pin is in alignment with the release marker indicator but the arrow indicator on the logger indicator is past the stroke limit indicator showing an out of adjustment brake stroke fig7 shows an isometric view of the assembly installed in an upwards facing position which orientation might be used to accommodate different chassis designs obstacles and or better line of sight fig8 shows isometric view of the assembly installed downward position with brakes released and the logger indicator showing an out of adjustment brake stroke fig9 shows isometric view of the assembly installed where the logger housing includes attached indicators fig1 shows a closer view of the assembly installed on the bracket where the logger housing has attached indicators fig1 shows another embodiment mounted to the air brake chamber where the logger indicator slides linearly on the bracket slot and uses cut slots on the side of the mounting bracket where the release markers and the stroke limit indicator are inserted fig1 shows an exploded view of another embodiment of the device of the present invention where the mounting bracket comprises two pivoting parts and the clevis housing.