An ordinary compass has a tip and a small hole at the other end.
When you want to read a book, you need to keep the compass level, then lie on your back, for example, facing the direction of a house, then keep the compass level and look at the direction pointed by the tip of the guide needle, which represents the "direction" of the house.
About "What do you think of the needle surface that is still marked with southeast and northwest?"
I don't know if your expression is wrong.
I don't think there is a label on the needle surface, southeast and northwest, right? The needle surface is relatively small.
There is a circle in the center of the compass called Tianchi (the directional compass is in Tianchi).
Some Tianchi Square are marked with southeast and northwest.
Views on this
It's a little complicated.
If you want to see the house, after you put the compass horizontally.
The crosshair silk on the compass should coincide with the front, back, left and right positions of the house.
At this time, turn the inner disk with both thumbs. When the inner disk rotates,
Tianchi will rotate with it. The inner disk rotates until the magnetic needle is stationary,
Overlap with the red line (meridian) pointing north and south in Tianchi.
At this time, it shows that the fishing line (horizontal line) sitting in the square intersects with the layers of the inner plate.
All kinds of data and information you are looking for are displayed in the area where this fishing line passes through and covers.
At this point, you must first find the direction of sitting on the compass.
It's on the floor of the 24th mountain. The "mountain" on the "direction" of the fishing line indicates the direction.
The "mountain" on the fishing line "sitting side" means sitting.
Just take a look at the direction of sitting.
Regarding your "standing in one place with the needle pointing to true north", does it mean that the position where I stand represents true north? If you stand at the door of a house and the direction you are facing is also the direction the door is facing, then "pointing to true north" means that the "direction" of the house is true north.
I hope you have understood. If there is anything unclear, we will learn from each other.
However, there are ten or twenty layers on the compass. Which floor is the direction of sitting? That's the floor of the 24th mountain. It's near Tianchi. We use the "mountain" in the fishing line direction to indicate the direction, and the "mountain" in the fishing line direction to indicate sitting.