23
Allvis – Manual (EN 2021-05-25)
4.5 Height Measuring
During height measuring there are several important points to
bear in mind.
•
As far as possible the vehicle should be positioned on
the same lateral level, or this can have an adverse
effect on the accuracy of the height measurements.
The extent to which the measurement accuracy is
affected can be seen in the table in section 4.6 Position
of the Vehicle.
•
Height measuring should never be conducted at the
same time as symmetry (cross) measuring. The reason
for this is that a difference in the lateral level of the
vehicle can significantly affect the measurement
accuracy during symmetry (cross) measuring.
Other applicable rules:
1.
Read the height dimension given on the data sheet.
2.
Select a suitable height measuring rod and adaptor
(socket).
3.
Push the height measuring rod and adaptor into the
measuring arm socket and set it to the height
measurement given on the data sheet.
4.
Mount the magnetic attachment in the socket on the
end of the measuring arm. Pull out and adjust the
measuring arm so that the selected measurement
point can be reached.
NOTE, the mounting point for the magnetic
attachment and measurement point where height
measuring is to be done must be on the same side of
the vehicle’s center line!
5.
Read the position of the bubble in the level. If it is in
the center, the measurement value for the vehicle is
correct.
If not, adjust the height measuring rod up or down so
that the position of the bubble is centered in the level.
