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Pole measuring water levels in dams
An Hispanic 5 year old boy standing next to a height chart. He is looking up with a frustrated expression, impatient with how slow he is growing.
Scale to measure the water level in the dam
Close-up of a gauge measuring a high water level at the River Spey in Scotland.
Water level gauge
Low level of a water reservoir in São Paulo, Brazil - Pedro Beicht Dam
Measure water depth with a folding ruler
Cute pink piggy bank sits on two water meters for hot and cold water. Fresh blue water is bubbling in the background
Water level meter located in the water of the dam. Concepts for natural resources. Water level gauges in the background is the reservoir of water
Water Temperature Gauge isolated on white background
Staff Gauge Water Level Measuring Pole
Kilogram-force per square centimetre meter
lake in Germany smooth water surface
Close-up Construction water level
Flooding river with a wateer level indicator. Imagge shows high water levels, pssibly overflowing.
Close-up of a tape measure on a blue defocused lights bokeh background. Shallow depth of field, space for copy.
Thermometer outside the window
Scientific research. Test tubes inside a Beaker.
Waterline of the black barge hull with immersion depth markings.
Pink Piggy Bank sits on the Water Meters against blue background with copy space for text
Zero Water Tank Level at External Indicator Reservoir
wall of a building with a water flood meter
Close-up of industrial thermometer.
Measuring cup isolated on bright background
Thermometer, Hygrometer
Water level gauge in a lake
Close-up of a tape measure on a blue defocused background. Shallow depth of field, space for copy.
Blue tide level measurement scale on concrete mooring wall in port
Technical tool for measuring atmospheric pressure and temperature  on ships
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