4412x2936pxgreen pencil, pencil, magnifier, notebook, math, wallpaper., mechanics of materials, and ignorance is darkness, slide rule, theoretical mechanics, calculations, strength of materials, knowledge is light, termeh, higher, HD wallpaper
3840x2560pxautomotive, beetle, black and white, buggy, car, car repair, car workshop, garage, man, materials, mechanic, parts, repair, repair shop, repairs, supplies, tools, volkswagen, vw beetle, workshop, HD wallpaper
