It's not that simple! "Angle measuring tool" I want to measure the angle!
[Concern] I want to measure an angle.
When two surfaces are in contact, there is always an "angle" involved. Angles can be expressed in "degrees, minutes, and seconds," or in decimal notation. So, how should we measure this angle? You might remember using a "protractor" in your elementary school math classes. Generally, angles can be measured with a protractor, but it can be problematic in places where a protractor cannot be applied or when precise measurements are required. <Special Angles> 90 degrees is called a right angle and is commonly used in industrial products. Additionally, 180 degrees is referred to as parallel or coplanar, and 180 degrees is also frequently used. Geometric tolerances specifically for 90 degrees and 180 degrees (such as perpendicularity, parallelism, and flatness) are also available. <Contour Tolerance> While tolerances are used to express angular deviations, there are cases where deviations are defined using contour tolerance. When a deviation of within 2 microns from the ideal angle is desired, it is defined as "contour tolerance of 2 microns." <Easily Measuring> Protractors lack precision and cannot easily provide accurate measurements. In such cases, preparing a dedicated gauge is a shortcut. Measuring with a gauge allows for measurements to be taken much faster and more accurately, by tens or hundreds of times.
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