Med-Hycos - the Data
The staff gauges allowed the direct reading of water levels by an observer and the record accuracy check of water level recorders.
Generally made of enamel steel, they are graduated for centimetric readings.
Two main types of staff gauges :
1) with the metric and decimetric values engraved on each unit,
2) with the decimetric values
engraved on the units, but the metric values engraved on separate small
plates which have to be fixed on the staff gauge units.
The staff gauges have to be fixed
vertically against bridge embankments or piers, or against strong steel
bars stuck in the ground. The successive staff gauge units should be correctly
levelled to allow accurate water level readings without « blank »
Made of enamel steel, clearly graduated each centimetre.