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Step 4Measured level
DO NOT MOVE THE RESERVOIR!.
Now move the measuring ruler to the point you want to compare to the reference point.
Here I placed it on top of the brick.
My new reading is 59 cm.
This a difference of 12.5 cm.
Here is a tape measure showing the same reading for the height.
This works excellent for slope and drainage.
If I know I want to have a slope of 1 inch per 12 feet the I measure out 12 feet and subtract the inch from my base reference level if I am looking for a downslope, or add the inch at 12 feet if I am looking for an upslope.
The neat thing about this is due to Pascal's law, it WILL WORK AROUND CORNERS!!!!!
The only reading you need to remember is your base reference, EVERYTHING is either higher or lower than that point.
I have found this to be accurate with 1/8 inch at 50 feet!!!!!!
A good trick to know is plugging the end of the plastic tubing with your thumb when relocating the measuring ruler to another point, and once there remove thumb and let the water seek it's level.
Try not to shake or flip the plastic tubing around before making a measurement or it will introduce bubbles into the line and change your reading. In that case, lay the ruler down below the upper reservoir level until water with no bubbles comes out. Then you must recheck your reference level and retake your measured level. Once you get the hang of this, you will wonder how you could waste so much time with a standard line and level technique!
Please vote if you found this instructable informative or helpful.
Now move the measuring ruler to the point you want to compare to the reference point.
Here I placed it on top of the brick.
My new reading is 59 cm.
This a difference of 12.5 cm.
Here is a tape measure showing the same reading for the height.
This works excellent for slope and drainage.
If I know I want to have a slope of 1 inch per 12 feet the I measure out 12 feet and subtract the inch from my base reference level if I am looking for a downslope, or add the inch at 12 feet if I am looking for an upslope.
The neat thing about this is due to Pascal's law, it WILL WORK AROUND CORNERS!!!!!
The only reading you need to remember is your base reference, EVERYTHING is either higher or lower than that point.
I have found this to be accurate with 1/8 inch at 50 feet!!!!!!
A good trick to know is plugging the end of the plastic tubing with your thumb when relocating the measuring ruler to another point, and once there remove thumb and let the water seek it's level.
Try not to shake or flip the plastic tubing around before making a measurement or it will introduce bubbles into the line and change your reading. In that case, lay the ruler down below the upper reservoir level until water with no bubbles comes out. Then you must recheck your reference level and retake your measured level. Once you get the hang of this, you will wonder how you could waste so much time with a standard line and level technique!
Please vote if you found this instructable informative or helpful.
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