旋标装置飞机控制板上的指示器或观测仪，用来测量角度。
An indicator or a sighting apparatus on a plane table, used in angular measurement.
结论角膜地形图仪系统测量角膜屈光度更为准确、全面，尤其对角膜过陡、过平、有斑翳、云翳者的检测结果更有参考价值。
Conclusions the corneal diopter measured by the topographer was more accurate than that measured by the keratometer, especially for the patients cornea was too steep, flat or corneal opacity.
简介：多功能工具箱包含12款工具：尺子、量角器、汇率转换、秒表、水平仪、重垂线、单位换算、灯光、我的位置、衣服尺码、健康查询以及鞋码。
Introduction: This useful toolbox contains 12 tools: Ruler, Angle Protractor, Exchange Rate, Stopwatch, Level, Plumb, Unit Converter, Light, My Position, Clothing Size, Body Mass Index, and Shoe Size.
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