视频中展示了一双手正在使用直角尺和铅笔在木板上进行标记。一只手稳稳地握住直角尺，确保其紧贴木板边缘，另一只手则拿着铅笔，沿着直角尺的边缘在木板上画出一条直线。背景是粗糙的地面，木板表面有明显的纹理和一些钉孔。整个过程显得非常专注和精确，显示出操作者对细节的关注和对工具的熟练掌握。
The video shows a person using a metal ruler and a pencil to mark a wooden plank. The person's hands are visible, with one hand holding the ruler firmly against the wood and the other hand using the pencil to draw a straight line along the edge of the ruler. The background appears to be an outdoor setting with a textured surface. The focus is on the precise measurement and marking process.
A person is holding a metal square ruler against a piece of light-colored wood, positioning it carefully. The person adjusts the ruler to ensure it is aligned correctly with the wood. The person then uses a pen to mark a point on the wood, following the edge of the ruler. The background appears to be a light-colored, textured surface, possibly a workbench or floor.