写实产品摄影，古董L形直角尺斜向放置在深灰色哑光平面上，深棕色实木尺身，表面带有自然木纹和使用磨损痕迹，所有边缘和L形拐角处包裹做旧黄铜，黄铜表面带有使用形成的氧化磨损痕迹，黄铜刻度条上刻印毫米级刻度与阿拉伯数字，长尺末端带有圆形悬挂孔，浅景深拍摄，侧光照明，器物边缘呈现柔和金属反光，深灰色纯色背景，无多余杂物，1:1正方形画幅，整体复古厚重质感。

Realistic product photography, an antique L-shaped square ruler placed diagonally on a dark gray matte surface, the ruler body is made of dark brown solid wood with natural wood grain and wear traces from use, all edges and L-shaped corners are wrapped with aged brass, the brass surface has oxidation and wear traces from use, the brass scale bar is engraved with millimeter scale and Arabic numerals, the end of the long ruler has a circular hanging hole, shot with shallow depth of field, side lighting, soft metal reflection on the edge of the object, dark gray solid background, no extra clutter, 1:1 square aspect ratio, overall retro and heavy texture.