hi there, i'm interested in your project. I'm skilled artist with more than 13 years of experience as a freelancer. I invite you to visit my profile here, there you can see relevant samples in my portfolio just click on my profile or open this link:
https://www.freelancer.com/u/emifloyd
I've read your project description. This is not an automatic response. I've experience in line drawings for instruction manuals, i've some samples in my portfolio, just look for the instructional drawings folder in my portfolio, or write me back and i'll share some samples with you. Looking forward to chat with you about your project :)
Emiliano