Tide gauges – Munro float gauge
The Munro gauge measures sea level by means of a float in a stilling well. The float is about 45 cm diameter - the large diameter reduces inevitable errors in buoyancy due to friction of the gearing and small changes in the length of float wire. This wire is coiled round a drum on the end of the gauge and another drum contains the counter balance wire.
The drum is geared to a slotted tape attached to a pen carriage which travels the chart during the rise and fall of the tide.
Measurement devices
Tide gauge systems
Full-tide bubbler
Half-tide bubbler
Direct pressure transducer
Tide gauges
Ott pneumatic gauge
Munro float gauge
Wellhead float gauge
Lea float gauge
Instruments
DATARING logger
Datum probe