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.

youdao

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.

youdao

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.

youdao

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.

youdao