Using an eye level - part 3

Determining height

When heights are calculated using the percentage scale the distance from the object to the level are presumed to be measured horizontally.

The diagrams below have the distance set at 62 feet, if the distance was measured along the ground in either case an error would occur. The error is fairly insignificant but does increase as the angle of slope increases.





Using an eye level - part 2

The second type of eye level can be used in the same manner as the first for determining level, the only difference being that the line inside the instrument will be lined up with the zero mark on the degree wheel in the level instead of a bubble.

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