I have several photographs of Programmable Logic Controllers (PLCs) that I require to be re-drawn or traced as black and white line drawings for a book I am writing.
I have attached an example black and white line drawing (Example_Black_and_White_line_drawing) from a previous book that is of the style I would like to maintain. This example was traced from a photograph I provided.
These images look much better than photographs in the final printed version of the books. I have attached the 13 images that I required to be re-drawn / re-traced using a vector graphics program like Adobe Illustrator.