This is a great drawing by one of the 19th century's finest draughtsmen.这幅恢宏画作出自一位19世纪最杰出的画家之手。Draughtsmen make drawing on a drawing board, a pencil a T - square , set square and scale.绘图员用铅笔 、 丁字尺、三角板和比例尺在绘图板上绘图....