Even if you’re not a mathematician, I think it’s safe to say that most people know the symbol .
But do you remember what it actually represents? Here’s a quick math lesson: It’s the ratio of a circle’s circumference (the distance around the circle) to its diameter (edge to edge, measuring through the center). Today is March 14th (3.14), but most math nerds like to celebrate it as #PiDay!
Did you also know..
is constant for any circle, any size
Continues to infinity
In 1706 William Shaw, a Welsh mathematician, introduced the symbol.
In 2010 a Japanese engineer and an American computer scientist broke the record for most digits calculated past the decimal: 5 trillion!
If you need to calculate the diameter of a tree trunk, pipe, or anything cylindrical, you will need a diameter tape measure. Just use it to measure the circumference, and it will calculate the diameter for you!
Lufkin and Pi-Cobra are the two main brands of diameter tape measures that we carry. If you’re a regular user of these unique and useful tape measures, you know their special skill: measuring the diameter of pipes or other cylindrical items.
I bet this week is going to be a doozie, so I think I might just unplug the TV and not read the news online either. I need a detox from all of the social and political unrest that is consuming the news headlines daily.
It’s pretty safe to say that we’ve entered the 2020 Holiday Season. What will your Thanksgiving and Christmas look like this year? COVID has put quite a damper on the holidays, but I’m sure we can figure out some modified ways to celebrate.
Why do we call the diameter tape measure a calculator? Because when you wrap it around the circumference of a pipe or a post, it “calculates” the outside diameter instantaneously. It’s a calculator that never slows down because it doesn’t use batteries. The special scale is in inches or millimeters, and it is stretched out by the factor of pi (3.14159). That’s how it does it for you.
A tape measure can solve basically one problem….How long is the item? But a pipe diameter tape measure can solve a short list of problems for you.
What is the outside diameter (OD) of that pipeline, without having to cut into it. You don’t even have to divide by pi.
What is the diameter of a tree trunk.
What is the accurate diameter of a tire.
What is the diameter of a beach ball, when fully inflated.
Even if the pipe is distorted, and the cross sectional diameter would be different in different directions, you can do it. The pipe diameter tape measure can tell you what the diameter would be, if it weren’t distorted. That’s because the measurement is based on the circumference. The tape automatically divides by pi (3.14159) for you.
This forgotten child gives you the outside diameter of a pipeline in both inches
and centimeters. It is valuable to both Americans (using the inch system) and those who use the Metric system of measurements. It goes up to 38″ diameter (955 millimeters diameter). The only thing it doesn’t offer is the ability to measure straight objects. You would have to have a regular tape for that.
Who would use this tape? Inspectors who travel and deal with both systems. Any drilling companies that use both metric and imperial systems of measurement.