## 5 Pipe Diameter Tape Measure Tips

When you use your Lufkin or Pi-Cobra pipe diameter tape measure, here are 5 tips to keep you out of trouble.

1. Make sure the pipe is free of dirt and mud. You don’t want to measure those things, just the pipe.
2. Use the right tape. Do you want your answer in 100ths of an inch, 64ths of an inch, or millimeters? There is a tape for each purpose.
3. Use the right side of the tape. The other side is probably a regular linear tape. It will give you the circumference, not the diameter.
4. Wrap the tape around the pipe straight, not at an angle. If it is not straight, you will get an elevated result. You can test this by wiggling the tape so that it gives you the lowest reading.
5. Be familiar with the scale. It can be tricky on a 64ths of an inch diameter tape. 48 on the scale means 3/4 ” diameter. The easy one is 32, which is of course 1/2″ diameter.

## The Mystery of the Architect Scale Ruler

Everyone knows how to use an inch ruler. And most people know how to use a metric ruler. It doesn’t matter that there are 2.54 centimeters per inch. A centimeter is a centimeter. But, if you remember when you saw an architect scale ruler for the first time, you will agree that the scales are a

mystery. There are several scales on the same ruler. There are (1/8, ¼), (½, 1), (3/8, 3/4), (3, 1½). What do these scales mean?

Let’s bring in a blueprint. Now you need that architect scale ruler to measure the size of objects on the blueprint. Since the objects are drawn at a scale of the original size, you need to match up that scale with the corresponding scale on the ruler.

How do you choose the correct scale? Look in the bottom right corner of the blueprint. There is a box of useful information. It has the name of the drawing, the date drawn, the architect name, and the scale that it was drawn with. If the scale is 1/8, then every 1/8″ on the paper represents 1 foot (or 1 mile, etc) in reality. So you would use the 1/8 scale on the architect ruler. Where the ruler says 16, the reality measurement is 16 feet (or 16 miles, etc). It doesn’t matter right now that the measurement on the paper is 2 inches. That’s too much information. Let the ruler do the work for you.

Congratulate yourself. Now you can consider yourself proficient at using an architect scale ruler.