What is symbol for first angle projection?

First angle projection is a system of creating engineering drawings and is commonly used in Europe and some other countries. In first angle projection, the object being represented is placed in front of a vertical plane and a series of views are drawn describing the object as seen from different angles.

The symbol for first angle projection is a square with a cross inside, typically located in the bottom left corner of the drawing. This symbol indicates that the drawing is using the first angle projection system. It is important to note that in other projection systems, such as third angle projection, the symbol may look different or be located in a different corner of the drawing.

It is crucial to understand and correctly use the appropriate symbol and projection system when creating or interpreting engineering drawings to ensure accuracy and clear communication between parties involved in the design and manufacturing process.