What is the designer's hand-drawn paper like?

Hand-drawn paper is hand-drawn chanting, the standard is the mechanical drawing standards, you can see the standard above, line type, line width, view, labeling and so on the standard, the drawings certainly need to be clearly expressed, can not be roughly the meaning of the word, but also what is not an artistic expression, the requirements of the rigorous and accurate, the view can not give rise to ambiguity, the size can not be missing! Manual drawing first of all requires a very clean overall feeling, not because it is a pencil drawing on the dirty drawings, frames are also standardized, this can not be arbitrary, in addition there must be the right type of line, the use of solid lines with solid lines, the use of dotted lines with dashed lines, there is also a view must be accurate, the view should be able to clearly express the shape of the parts to be drawn, the necessity of a sectional view, view to the view, Detailed view to draw, the main thing is that the size must be correct and reasonable, the key dimensions must be there, mainly contours, important features of the size of the part, taking into account the feasibility of the process, the size of the labeling is very conscientious, can not be self-contradictory, and try not to label the space size, technical requirements, roughness, fit tolerance, etc. should have!