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/diy/ - Do It Yourself

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>> No.1533020 [View]
File: 64 KB, 1200x835, measuring_with_metric_vernier_caliper.gif [View same] [iqdb] [saucenao] [google]
1533020

>>1533009
That's the vernier. What you do is clamp something in the calipers, and read the big scale. 0 on the little scale marks where you should read. If it isn't perfectly on one of the big lines, you'll want to look at the number to the left. So if you're in between 4 and 5, you read 4. What you do next is read the vernier. This tells you with 0.02mm accuracy (usually). How you do it is simple. See how most of the small lines don't align with the lines on the big scale? Look for the line on the small scale that aligns best with any line on the big scale. This is your precise measurement. Easy peasy, but much better demonstrated with a gif.
So, let's look at the picture. We start by reading the big scale. Left of the 0 mark is 28mm. We now read the vernier scale. The best alignment is at 6, right? That means our measurement here is 28.6mm.
It isn't as exact as a digital caliper, but it's good enough 99% of the time and it'll never run out of batteries. Usually cheaper too.

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