©2008 Johnson Level & Tool
5
Reading measurements using a Leveling Rod
Height reading
Read the rod where it is intersected by the
horizontal hair. For example, the height reading
in Figure 1 is 2.0 ft.
Distance Measurement
Read the rod where it is intersected by the
upper and lower stadia hairs. In Figure 1, these
readings are at 1.9 ft. and 2.1 ft. The stadia
ration is 1:100, therefore the distance from the
instrument to the rod is: (2.1-1.9) x 100 = 20ft.
Angle Measurement
As shown in figure 2, sight point A and note the reading on the
horizontal circle. Rotate the level and sight point B. The angle turned
is the difference between A and B. The angle A0B = xº = A - B.
Fig. 1
Fig. 2
1316H-English 7/10/08 9:45 AM Page 5
