I am working on a repair for an old Meriam Well-type manometer and I am being a bit lazy on thinking/writing out my problem. I am trying to design a new well for it. My question is -- am I right in thinking the well should have a large diameter and a low height so that the fluid pressure won't affect my readings much? Meaning, if I made a smaller tank and had a long tube out the bottom and had it loop back up to the manometer, the fluid pressure would "push back" on the well, thus it would take more "real pressure" before I got a reading -- or in other words my readings would be low???? The fluid has a specific grav of 2.95, so it is fairly "heavy" Thanks!