Now, this is actually less than the original quote, but still an exorbitant amount for a tablet that cost me $229. However, Iâd like to draw your attention to the above image, sent to me of my tablet by the ASUS repair center.
1 You'll feel a slack in the line. 2  At the point where you feel the slack, mark the line at the top edge of the casing (you can tie a small knot in the line, use tape or a marker). 3  Pull the line back up from the casing. 4  Measure the length of the line from the bobber to the marked line. 5  This is your static water level.
This is the vertical distance that you are able to pump the liquid. Say your pump is rated for a maximum head of 100 feet, this does not mean that you are restricted to100 feet of pipe, you could use 300 feet, so long as the final discharge point is not higher than 100 feet above the liquid being pumped. This is the vertical distance that the pump can be above the liquid source. Typically, atmospheric pressure limits vertical suction lift of pumps to 25 feet at sea level (see chart below). This does not mean that you are limited to 25 feet of pipe, you could use upwards of 200 feet of suction pipe, so long as the liquid source is not lower than 25 feet below the pump center line.