Rail lengths

Okay, kiddo. So you know how trains run on tracks, right? And those tracks are made up of really long metal rails that are connected together. These metal rails are called rail lengths.

Now, imagine you have a really long piece of string. You can cut that string into smaller pieces to make it easier to work with, right? It's the same with rail lengths. Sometimes the people who build and maintain train tracks need to cut the metal rails into smaller pieces so they can fit them in different places or replace damaged sections.

But it's important for all the rail lengths to be the same size so that the train can ride smoothly along the tracks without any bumps or jolts. So people measure the length of each rail and make sure they are all the same, down to the smallest measurement.

Does that make sense, kiddo?