A measuring instrument is something used to figure out how big or small something is. It's like a tool that helps you find out how much of something you have.
For example, if you want to know how much water you have in a glass, you can use a measuring instrument such as a measuring cup. The measuring cup helps you measure how much water is in the glass by using markings on the side of it.
There are many types of measuring instruments, like rulers, tape measures, thermometers, and scales. Each measuring tool is designed to measure different things in different ways.
Measuring instruments are important because they help us make sure we are using the right amount of something. For example, if we want to bake a cake, we need to measure out the right amount of ingredients to make sure the cake turns out correctly.
So, measuring instruments are like little helpers that make sure we get things just right!