Engineering drawing abbreviations and symbols

Hi there! So, you know how sometimes grown-ups use short words or pictures to talk about complicated things? That's kind of what engineers do when they draw things. They use special little pictures and letters to show how something is supposed to look or how it's supposed to work.

For example, let's say you want to draw a picture of a door. Instead of writing the word "door" over and over again on your paper, you can use one special little picture that means "door." This picture is called a symbol.

So in engineering, there are symbols for all kinds of things, like a motor, a valve, or a screw. These symbols help the engineer know exactly what they need in order to build or design their thing.

There are also special little letters that engineers use to describe different things about their drawing. These might mean something like "dimension" (how big something is supposed to be), "tolerance" (how much room for error there is), or "material" (what the thing is made of).

So basically, engineering drawing abbreviations and symbols are just like a special secret code that engineers use to talk about their designs. It helps them be very precise and make sure everything is just right.