Liquid flow measurement in open channels — Velocity-area methods — Collection and processing of data for determination of errors in measurement

Hydrometry — Velocity-area methods using current-meters — Collection and processing of data for determination of uncertainties in flow measurement

Liquid flow measurement in open channels — Rotating element current-meters

Hydrometry — Rotating-element current-meters

Liquid flow measurement in open channels — Direct depth sounding and suspension equipment

Hydrometry — Direct depth sounding and suspension equipment

Liquid flow measurement in open channels — Calibration of rotating-element current-meters in straight open tanks

Hydrometry — Calibration of current-meters in straight open tanks

Hydrometry — Calibration of current-meters in straight open tanks

Echo sounders for water depth measurements

Hydrometry — Echo sounders for water depth measurements

Measurement of liquid flow in open channels — Water level measuring devices

Measurement of liquid flow in open channels — Water-level measuring devices

Hydrometry — Water level measuring devices

Hydrometry — Water level measuring devices

Measurement of liquid flow in open channels — Cableway system for stream gauging

Hydrometric determinations — Cableway systems for stream gauging

Hydrometry — Cableway systems for stream gauging

Liquid flow measurement in open channels — Ultrasonic (acoustic) velocity meters

Hydrometric data transmission systems — Part 1: General

Hydrometric telemetry systems — Part 2: Specification of system requirements

Liquid flow measurement in open channels — Position fixing equipment for hydrometric boats

Hydrometry — Position fixing equipment for hydrometric boats

Measurement of free surface flow in closed conduits — Part 2: Equipment

Measurement of liquid flow in open channels — Equipment for the measurement of discharge under ice conditions

Measurement of liquid flow in open channels — Method of specifying performance of hydrometric equipment

Measurement of liquid flow in open channels — Electromagnetic current meters

Hydrometry — Catching-type liquid precipitation measuring gauges

Hydrometry — Measuring river velocity and discharge with acoustic Doppler profilers

Hydrometry — Hydrometric data transmission systems — Specification of system requirements

Hydrometry — Hydrometric data transmission systems — Specification of system requirements