A photogrammetric system based on a desktop personal computer and a mount-on mirror stereoscope is utilized and evaluate本研究以一桌上型数位摄影测量系统，采用外挂立体镜，观测分割屏幕，进行内外方位、立体绘图等数位摄影测量作业模式，探讨该系统之人机界面、视觉环境。