how to label the parts of my models,

Questions & Answers
1

I am learning unity and blender. I want to label the parts of my 3D model in unity. Something like in the image shown below. Can somebody guide me?.
111576-label.png

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2

If your 3D model’s position is fixed and you do not want to rotate the model and main camera, simply use unity UI text and UI image to show that. For a 3D condition, you need a 3D GUI for that.

Simple approach: You can put 2 Quads and attach the transparent lable texture to them, First quad is for the front side of the lable and second quad is for the back side of the lable.