If a carryon bag is 2cm bigger than the stated measurements I was curious as to how many airlines or which airlines in particular are known to enforce the rules most or all of the time? I presume a discount airliner such as Easyjet might even make you check your bag??
Edit: I'm not looking for anecdotes as to make it broad but more towards how do airliners run the bag checks? The methods? And, how these things might make easy to bypass or not. Not looking for something that just depends on the random mood of the checker but how each airline runs their checks every. single. time.