种用于石油、化工等行业的需要测量液位和计量液量的容器上便于观察的反光计量标尺。其结构包括有尺盒、上盖、扶正块、浮球、尺标座、尺杆、滑标针和用反光材料制成的尺标刻度。其特点是：尺标刻度便于观察，尤其是夜间观察更为方便，改善了工人的操作条件，计量准确度高。在 Species used in petroleum, chemical and other industries need to measure the liquid level and measuring the amount of liquid containers for easy observation of reflective measuring ruler. The structure includes a scale box, a cover, a righting block, a float, a ruler, a ruler, a slider, and a ruler mark made of a reflective material. Its features are: ruler scale easy to observe, especially at night more convenient to observe, to improve the working conditions of workers, measurement accuracy. in