This is the design for Myles's Arm-Apparatus. It was made by Myles to aid him in his invention work. However, it does have some combat features for protection.
This is a smaller version of this image. If you wish to see it in full size you will need to go to the C.O.G. Blog. The blog also follows the creation of C.O.G. (Chronicles Of Genius) graphic novel.
You can follow the blog here: [link]