Change of gauge (disambiguation)
Change of gauge is the process of converting a railway from one rail gauge to another.
Change of gauge or gauge change may also refer to:
- Change of gauge (aviation), change of aircraft without changing the flight number
 - Break-of-gauge a location where two railroad lines of different gauge meet
 - Bogie exchange, a system for operating railway wagons on two or more gauges by switching bogies
 - Variable gauge, a system using adjustable wheel sets where the gauge is altered by driving the train through a gauge changer
 - Dual gauge, the use of additional rails are laid to accommodate two different gauges on the same track
 - Track gauge conversion, replacing a railway track of one track gauge with a railway track of another track gauge
 
See also
- Gauge fixing, a mathematical procedure for coping with redundant degrees of freedom in field variables