How to Read an Inch Ruler or Tape Measure

How to Read an Inch Ruler or Tape Measure


Hi, I’m Bob welds, and this is how to read an inch measuring tape using fractions To keep things simple, we’re only going to talk about inches Also, we’re only going to talk about your typical inch Ruler or measuring tape We won’t discuss machinist rules or anything fancy like [that]. We can do that later I’m going to ask Sparky to show you the kind of ruler that we’re talking about Remember almost all rulers and measuring tapes have marks and numbers so let’s look closely at the one that we’re going to use on This measuring tape the numbers are labeled inches Let’s take a closer. Look at a single inch I’m going to zoom in to see it better if You count the marks you’ll see that there are 16 You can do an easy check count 8 marks and see if you’re at the half-inch mark Some tapes have 32 marks on the first few inches or so just be sure that you check before you start now you might be thinking, why 16 marks? a typical tape measure divides each inch in half and then each half Into quarters then the quarters are halved to make eighths our tape measure divides the eighths in half to make Sixteenths now remember some tapes may have 32 marks. We’re only working with one that has sixteenths here So to measure with the ruler or tape measure you just need to know the fraction of an inch that the mark represents Keep in mind that the fraction should always be in simplest form let’s look at an example to see what I mean here you can see the mark at the halfway mark between one half inch and one inch this is the 3/4 of an inch that means 3/4 of an inch I’ll erase the smaller marks so you can see the quarter is easier Now you can plainly see [3/4] What if I had discounted all of the 12 marks up to the line could I find the answer that way let’s look at that? The fraction would be 12/16 now. This is technically the right fraction it just needs to be reduced Now this is not true of fractions in general, but reducing fractions to their simplest form on a tape measure or ruler Like the ones that we’re looking at is easy You can just keep dividing by two if the number on the top is even your work is not done. Keep dividing by two Until the top is odd, and then stop here what? you You see it’s always this easy with a ruler or tape measure. Because the denominator the number on the bottom can only be two Four, eight, or sixteen these all divide easily by two Now let’s try some practice problems pause the video when you see Sparkies pause then write your answer down before you hit play again Take this example The correct answer is [one-quarter] if you said two eights or four sixteenths you are close, you just didn’t reduce the fraction. Here’s one that’s a little harder pause the video and figure this one out Did you say five [eighths] great see how the numerator is odd? Now if you said [ten] [sixteen] you need to rewind the video a little and see about reducing Here’s one that’s about as hard as they come see if you can figure this one [out] The answer is thirteen sixteenths if you see, it’s on the smallest mark You know it’s sixteen you can just count the marks starting at the Halfway point with 8 9 10 11 12 13 and Then you can count up to 16 to make sure that you’ve got it, right 14 15 16 since 13 is odd. We don’t have to reduce We’ll do one more this one has passed the [one-inch] mark, but I’ll bet you know what to do with it The measurement is one in three [eighths] you see you tack your fraction onto the number of whole inches in the measurement Okay, if you got those three right you understand what’s going on keep in mind when using a new tape measure that you need to know exactly how many marks each inch has Be sure and count them before you start if it has 16 then the smallest fraction is 1/16 if it has 32 That’s a little bit different, [but] I’ll bet you can figure out how to use it. We just didn’t talk [about] it here That’s all for now. [I’m] Bob welds, and these are weld notes you

100 thoughts on “How to Read an Inch Ruler or Tape Measure

  1. I just got denied a job for not passing a ruler reading test. I didn't simplify the fractions on some of the measurements. I think that's BS. Do you think it's that serious to deny a job over?

  2. i am 26 years old, been in the US since I was 17 and I was never able to understand the imperial system, now thanks to this video it became soo easy, thank you

  3. I have spent a long time studying how to get your toddler to read and discovered an awesome website at Presto Learner Genie (google it if you're interested)

  4. thx lot.i was absent to our school and i didnt know how to do this so i watch it on internet and i learned it fast wow thx
    im only 12 years old

  5. Thank you so much. Don't know why school never taught this as I was also embarrassed about how bad I am at measuring. I quilt so have always made pieces bigger and cut down but now I can really read my rulers. THANK YOU!!

  6. This is great, very well explained, thank you! But…in a ruler (in inches) how much would be 8.858? (For example)?

  7. Jesus….I feel really dumb now. Like in the comments below me, I was always REALLY embarrassed to ask anyone for help using a ruler because it made me feel very stupid and ashamed that I never learned correctly when I was younger. So, this video has been a huge help!

  8. Thanks for doing what you do! Youve certainly helped me make my life easier. Appreciate the easy breakdown of everything! Cheers

  9. Thank you! (some math teachers need to watch this, not for learning math, but for learning how to better instruct/teach math!) Excellent video!

  10. can someone tell me why i am learning this in tech ed?Also thank you for this video i wasn't really paying attention class but i found the video on the internet

  11. That was the best explanation! Thanks. Now I understand the Imperial measure tape! πŸ™‚ . We, Europeans have the metrics system, but now I know both πŸ™‚

  12. Okay! Wow! That was actually really helpful! Thank you! I think I can measure things now! πŸ“βœπŸ‘

  13. I'm homeschooling my kids and was struggling to teach them how to read a ruler until I found your video. I put it on for them to watch a couple of times and they were able to learn in under 10 mins. THANK YOU!

  14. I am a seventy two year old grandmother who is homeschooling my grandson.
    He is thirteen and on the high functioning level of Autism.
    He is so smart and I don't want to hold him back.
    Since I believe you can't teach beyond what you know,I am struggling on the best way to begin.
    Thank you ,would you agree to be cloned??! Lol

  15. I'm from the UK so we use the metric system and the imperial system but I only ever learned the metric system for Carpentry work so this video is very helpful

  16. Thank you!!!! I’m 43 and just now get it because of you. I’m favoriting this video and referring back to it and sharing it with my son.

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