I probably won't be carrying a sh*t stick with me anymore. Notice the red dot on top of the pipe.
I really like it. With the J-Mate internal level; why bother with the tri-brack?
Curiosity got the better of me so I performed a quick "bucket" test.Are you shooting the top id and then subtracting the id to get flowline? Will the JMate shoot through the liquid or give a reading to the surface of the liquid? The handheld laser distance measurers that I have used wont shoot through the liquid.
I'm pretty sure that's not the way light works -- I think it's speed is constant through a given medium, no matter what medium it traveled through previously. But it's an interesting question, and I'm going to pose it to my son the physics major.I see the water slows the return while traveling thru the water. Because of this the speed of the laser exiting the water is less than before it hits the water so the distance down to the water does matter.