如果你数学不及格或者讨厌几何，那么，这个理论也许对你有用。我不会为你证明勾股定理，但我会给你介绍个方便的设备。有了它，你就能很好地测量墙的角度，帮助室内施工。红点测量仪是运用镭射线和三角形公式来计算定点间距离的工具。
测量仪包括了两个测量臂和一个红色指示灯。下面是它的使用说明： “只需把两个测量臂打开，把射线指向想要测量的距离的两端，屏幕上就会显示出长度。”
别再爬上爬下测量距离或者是找人帮你量大件物品了。自己动手吧！
设计者: Huang Qiaokun
Yanko Design is a web magazine dedicated to introducing the best modern international design, covering from industrial design, concepts, technology, interior design, architecture, exhibition and fashion. Its about the cutting edge and the classic, the new and the rediscovered. Its all about the best. Yankodesign.com reaches a rapidly expanding audience of approximately 520,000+ unique users, viewing 2.7 million pageviews each month with 13,000+ total daily newsletter subscribers making it the worlds most popular & influential online design magazine. Yanko Design is on the list of Technorati.coms top 100 most read blogs on the internet, currently ranked at 63 (out of 75,000,000+ blogs).
