Historical information
Set of three documents regarding braking for the X class tram.
1 - Automatic Brake operation - chart 3 - showing pressure circuits in red along with notes about the system.
2 - Braking chart thought to be relevant to the X class tram
3 - calculations for above.
Significance
Demonstrates an X class automatic brake operation system.
Physical description
Set of three documents - drawn on foolscap paper .