🫧 水平仪（手机在线水平尺 / 测量倾斜角度）Bubble Level (Spirit Level)
用手机的陀螺仪/重力传感器做水平仪：圆形气泡和横竖两个水平条，实时显示左右、前后倾斜角度（0.1°），水平时变绿并提示音和振动，可校准归零和锁定读数，适合挂画、装置物架、安装家具和检查桌面是否平整。Use your phone’s motion sensor as a spirit level: a round bubble plus horizontal and vertical vials, live tilt angles to 0.1°, a green highlight with beep and vibration when level, zero calibration and hold — for hanging pictures, shelves, furniture and checking surfaces.
把手机平放在桌面、画框或架子上。气泡在中心、读数接近 0° 即为水平。手机侧立贴在墙面或门框上时，看“左右倾斜”可检查竖直。Lay the phone on the surface. The bubble in the centre and readings near 0° mean level. Stand the phone on its edge against a wall or frame and read Left/right to check plumb.
使用说明与常见问题How-to & FAQ
「水平仪（手机在线水平尺 / 测量倾斜角度）」是什么？What is the Bubble Level (Spirit Level)?
用手机的陀螺仪/重力传感器做水平仪：圆形气泡和横竖两个水平条，实时显示左右、前后倾斜角度（0.1°），水平时变绿并提示音和振动，可校准归零和锁定读数，适合挂画、装置物架、安装家具和检查桌面是否平整。Use your phone’s motion sensor as a spirit level: a round bubble plus horizontal and vertical vials, live tilt angles to 0.1°, a green highlight with beep and vibration when level, zero calibration and hold — for hanging pictures, shelves, furniture and checking surfaces.
如何使用「水平仪（手机在线水平尺 / 测量倾斜角度）」？How do I use the Bubble Level (Spirit Level)?
用手机打开本页，点“开始测量”并允许“动作与方向”权限（苹果手机需要）。把手机平放在要测的面上，气泡居中、读数接近 0° 即为水平；侧立贴在墙面或门框上可检查是否竖直。手机壳不平时，先放在已知水平的面上点“校准归零”。Open on a phone, press Start and allow motion access (required on iPhone). Lay the phone on the surface — centred bubble and ~0° means level; stand it on its edge against a wall or frame to check plumb. If your case is uneven, zero it on a known-level surface first.
电脑上能用吗？Does it work on a computer?
大多数电脑没有陀螺仪或重力传感器，所以无法测量。请用手机或平板打开本页。Most computers have no motion sensor, so please open this page on a phone or tablet.
测量精度怎么样？How accurate is it?
手机传感器一般能达到 0.1°–0.5° 的精度，日常挂画、安装置物架足够；建筑施工等专业场景请使用专业水平尺。Phone sensors are typically accurate to 0.1°–0.5°, fine for pictures and shelves; use a professional level for construction work.
「水平仪（手机在线水平尺 / 测量倾斜角度）」免费吗？文件会上传吗？Is the Bubble Level (Spirit Level) free? Are my files uploaded?
「水平仪（手机在线水平尺 / 测量倾斜角度）」完全免费，无需注册。你输入的内容只保存在本机浏览器里（方便下次继续），不会上传到任何服务器。The Bubble Level (Spirit Level) is free with no sign-up. What you enter stays in this browser only (so you can continue later) and is never uploaded to any server.