特点：
　　◆ 安装方便、操作简单，适宜施工现场使用。
　　◆ 完全按照行业标准《公路土工试验规程》设计制造。

Feature：
　　◆ Convenient installation, easy operation, suitable for using in construction site.
　　◆ It is totally designed as professional standard “Highway’s earthwork regulations of test