Tools (recommended): Bosch GLM 20 Compact Blaze 65′ Laser Distance Meter https://amzn.to/2UqdpoT Tools (other): Prexiso Penlaser Digital Mini 50′ Laser Distance Meter https://amzn.to/ 36Tnopw Transcript: Hi, I’m Sean Michael Ragan, and this is Cool Tools. So I’m putting up a new water gap in the fence below our cattle pond, and the first thing I want to do is hang a heavy steel pipe between these two posts here, which means I need to measure this distance to within an inch. or less, to know how long to cut it. You could use a tape measure, but since there is nothing to rest it on, it will sag in the middle and the reading will be too long. There is a formula for correcting sag in a steel band, but you need to know how much tension the band is under, which requires a tension handle. I don’t have a tension handle and I don’t want one because they are expensive and quite specialized. So I thought I’d try one of these laser distance measures, which uses a beam of laser light instead of a physical tape to bridge the gap. There are many of these on the market from companies with names like DTAPE and Prexiso that seem to only sell this product. Some of these have good reviews on Amazon and cost as little as fifteen bucks, but with long-term reliability in mind, I decided to spend a little more money and go with a brand I trust, which led me to this little Bosch. GLM-20, which claims accuracy of up to 1/8 inch at 65 feet. My only complaint so far is that if you try to use it outside on a sunny day, it’s hard to see the laser dot. It can be done, if your target is in the shade or you can fix it to be in the shade, but it took me three or four minutes my first outing, working in broad daylight, to get a good measurement. I returned at dusk to take this photo for the camera. 27 feet, 7 and 3/16 inches. This is the drill pipe, after it’s been cut to length. We started with a 31-foot stem and cut it to 26 feet, 6 3/4 inches, which we measured with a steel tape placed across the top of the pipe. Here, I placed a cinder block flush with one end so I could check the length with the laser, which reads 27 feet 6 and 5/16 inches. That’s not too bad, considering the pipe isn’t sitting on flat ground and will tilt a bit to match the curve of the hill. After about an hour of work, the pipe hangs and the fit is almost perfect: here’s one end and here’s the other. The tool is really simple to operate. Pressing the button once turns on the laser and starts continuous measurement; once you line it up, pressing the button again keeps the last measurement on the screen and turns off the beam. If you want to measure twice like Grandpa always taught you, you can repeat that process to take and keep a second measurement on the screen. Press and hold to turn the unit off again, and while it’s off, another long press will let you choose between feet plus inches, inches only, or meters to three decimal places. Well, thanks for looking! As always, you’ll find affiliate links in the description field below the video; If you’ve seen something here that you like, check it out, and also check out our blog and podcast at cool-tools.org. See you next time! Find more Cool Tool reviews here: http://kk.org/cooltools.

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