L
Leatherface
One last hopefully informative post before I go to bed.
This came about, when I took a spirit level back to the shop because it was well out and inaccurate, far above the allowed tolerance. Had to explain to the guys behind the counter how I knew, so guess one or two members may not know either.
Place your level on the wall horizontally, level the vial and draw a line, then turn it upside down, level the vial and draw another line as close as you can to the other. These lines should be parallel - any difference will show how inaccurate it is.
Repeat process vertically.
Most levels will not be 100 percent. This is why it is best to "end to end" your level when putting your datum line around a room.
This came about, when I took a spirit level back to the shop because it was well out and inaccurate, far above the allowed tolerance. Had to explain to the guys behind the counter how I knew, so guess one or two members may not know either.
Place your level on the wall horizontally, level the vial and draw a line, then turn it upside down, level the vial and draw another line as close as you can to the other. These lines should be parallel - any difference will show how inaccurate it is.
Repeat process vertically.
Most levels will not be 100 percent. This is why it is best to "end to end" your level when putting your datum line around a room.