It is accurate to within 0.03mm. The same sensor is used on a boat to shine a beam off the tiller bar, using the reflection to measure the Angle of the rudder.

这个感应器非常精确在0.03毫米内，同样的感应器也用在船只上去投射舵柄连接杆发出的电波，利用反射去计算舵的角度。

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To get the ball under the bar, they must learn to aim slightly lower than normal, reducing the ball's take-off Angle by around half a degree.

为了让球在门柱下，他们必须学着瞄准得比往常烧低一些，将球的起飞角度降低半度左右。

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This Paper Presented a simple method for measuring wedge Angle between end-faces of crystal bar used in microwave delay lipe.

本文介绍了一种简便的测量微波延迟线所用晶棒两端面间楔角大小的方法。

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Liverpool briefly threatened when Torres fired over the bar from an acute angle and Chelsea suffered a blow when captain John Terry received a yellow card for a late challenge on Reina, meaning he will be suspended for the second leg at Stamford Bridge next week.

CNN: Chelsea fight back for crucial away victory