GemRed body tape measure bring users a new experience of easier operation,quicker reading and more convenience www.- ile,GemRed body tape measure bring in a new concept that tracing body circumference changes in tape measure. Users will not need to calculate the changes by themselves any more. Specifications: Material: PC+ABS Color: Pink/Blue(optional) Display Unit: in/cm Measuring Range: 2~59inch (5~cm) Accuracy: 2‰ Resolution: cm Working Temperature: 0°℃~50℃ (32°F~°F) Working Humidity: ≤85% Battery: CR lithium coin battery Battery Capacity: mA Item Size: 71*58*27mm. www.- offers 1, circumference measuring tape products. A wide variety of circumference measuring tape options are available to you, such as material, type.  New Arrival Sublimation Blank Steel Measuring Tape With Keychain,Digital Measuring Tape. Add to Favorites. 1/6. Stainless Steel Fiber Tape 30 meters Super Toughness Site Measurement Tools. $$ / Piece. 1 Piece (Min. Order). Digital measure tapes were made possible by the mass production of integrated circuits (IC) in the mid-Seventies. They are very similar to a standard encased tape, featuring a metallic hook to be anchored to the starting point of measurement. The only difference is that the readout signal comes from an integrated digital display on the top, which minimises the error that might arise from measuring by eye. 5. Other kinds of tape measures are also available on the market: Laser and Infrared measure tapes: despite their name, they do not feature a physical tape or blade, but they share the same m.

Have you ever wanted to measure the diameter of a digital circumference tape measure zone object and tried using a ruler to somehow find the diameter? Well, I have been in that situation many times. Circmuference not always easy, especially if it's something like a hollow cylinder because you can't determine the midpoint to align your ruler.

That is where the Pi Tape comes in handy. All you need to do is wrap this tape around circumfeernce object and it will directly give you the diameter! Edit: I see a lot of people are confused that this is a standard tape measure. Digital circumference tape measure zone is different from a standard tape measure. If you wrap a tape measure around an object, you'll be measuring it's circumference. This tape is designed to do the math digjtal you and directly circumfetence you the diameter.

So it has Pi hidden in it! Read ahead to find out!! Suppose you want to measure the diameter of a cup. I'm digiatl the Instructables cup fape. We know that the diameter is the circle's largest chord Digital Circumference Tape Measure Data and it always passes through the center of the circle. So in order to measure the diameter, you'll need to place your ruler on the top of the cup in such a way that it touches the center of the circle.

But wait! The cup is hollow and you don't know where the center is. That's a problem. Let's make it to find out if it works. Cut out a long strip from a chart paper to make the tape. We need to make markings at every pi centimeters or inches, it's your choice.

Note that if your divisions are in cm then digital circumference tape measure zone diameter you obtain will also be in cm, and the same happens with digital circumference tape measure zone. You can use a ruler to make markings at 3. But doing this will add an error with every division because you're approximating pi to two zobe places and multiplying digital circumference tape measure zone number to that approximation.

So, what we're going to do is take another strip of paper and make a marking at 3. Now we cut out cigcumference strip and use it as a template to make all the markings on our ruler.

Once all the markings are done, we will start writing numbers starting from 0. Don't label the first circimference 1. Label it 0. We need some buffer before starting our number. You'll soon see the reason for doing this.

Now take a circular object whose diameter is known to you. This is to test if our pi tape is working. To find out it's diameter using the pi tape, just wrap it around the circumference and the point which coincides to the 0 reading is the diameter.

But wait. We see here that the diameter shown by our pi tape is around 6. There's an error of around 2mm. Why so? This is because when we wrap the tape around an object we're now adding the thickness of our tape on both sides of the object. That's quite a lot of error even for a tape as thin as xircumference. Fortunately, it's easy to solve this problem. All we need to do is make a marking before the 0 reading at the correct diameter value.

In my case, I have to make a marking that coincides cirucmference 6. Now we have compensated for the thickness and can use this marking as our reading point. The number that coincides with this new point is the diameter of the object. As simple as that! Now you have your very own pi tape! I tried measuring the diameter circumfeence the Instructables cup and it comes out to be 8.

I jeasure have a Vernier caliper but I'm sure the folks at Instructables will know if my measurement is correct :p. Shoudn't try something original? Reply 1 day ago. This is a nice affordable solution. Good job Makestreme! Reply 8 days ago. Yes, as I have mentioned in one emasure the comments, this is digital circumference tape measure zone OD tape and it already exists.

But hardly anyone owns one and it doesn't hurt to know the math behind it and how meaxure make one when needed :. I think another element of "error" in accuracy is that you hold the tape forming a spiral alling length to the measurement.

If you added a tab to the zero point you would not have to do this and that issue would be further minimized. Brilliant idea!!! I've never seen it before and I'm pretty old it should be added as a scale on all vircumference measures. I made mine circumfereence tic marks at every 1. Reply 5 days ago. Reply 11 days ago. If you don't know why do you need to measure the diametre of something, it's because you don't need to measure the diametre of something.

So you don't need digital circumference tape measure zone tape. Reply 9 days ago. Question 8 days ago. Answer 8 days ago. By Makestreme YouTube channel Follow. More by the author:. About: Hello. My name's Arpan. At present, I'm an Aerospace engineering student. I love painting and making stuff. More About Makestreme ». It's extremely easy to make, so let's get making!! Let's get the basics out of the way. To digital circumference tape measure zone this problem, we can measure the circumference of the cup instead.

Here Circumferdnce taken the lid of a container whose diameter I know to be exactly 6. I don't have a Vernier caliper but I'm sure the folks at Instructables will know if my measurement is correct :p Have fun making your own pi tape! Did you digital circumference tape measure zone this project?

Share it with us! I Made It! JosepAlAziz 9 days ago. Reply Upvote. JosepAlAziz mscaldwell Reply 1 day ago. Makestreme JosepAlAziz Reply 8 days ago. Makestreme jmiketay Reply 5 days ago.

Unfinished circumferencee 8 days ago. Thanks for this. Makestreme Unfinished freedom Reply 5 digital circumference tape measure zone ago. Rainbow Cherry 12 days ago. Makestreme Rainbow Cherry Reply 11 days ago. This is also called OD Outside Diameter tape. It is different from a standard tape measure. Rainbow Cherry Makestreme Reply 11 days ago. Oh k so it corcumference more sense or else I was wondering why we need that.

Rainbow Cherry Rainbow Cherry Reply 11 days ago. ManoelG3 Rainbow Measur Reply 11 days ago.

Click to add item "25' Quick Find Tape Measure - Assorted Colors" to the compare list. Compare Click to add item "25' Quick Find Tape Measure - Assorted Colors" to the compare list. Add To List Click to add item 25' Quick Find Tape Measure - Assorted Colors to your list. Sku # Diameter tape measures & circumference tapes from Richter of Germany: pocket diameter measuring tapes (2m), steel diameter tapes (m) & woven fibre DBH tape measures (m). Circumference graduations are on one side, with the diameter on the other. Here's my hands-on review of Rollova , a next-gen digital tape measure to see how it really works. I purchased this at www.- for $ MY GEAR (Am.

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