Symons Gauge: Non-Recording Rain Gauge Identification

The question asks to identify the non-recording type rain gauge from the given options.

Understanding Rain Gauge Types

Rain gauges are instruments used to measure rainfall. They are broadly classified into two types:

• Recording Type: These gauges automatically record the amount of rainfall over time. They often use mechanisms like floats, tipping buckets, or weighing systems to create a continuous record.
• Non-Recording Type: These gauges require manual observation and recording. Rainfall is measured periodically by emptying the collected water or reading a scale.

Analyzing the Options

• Float type rain gauge: This is a recording type. A float rises with the collected water, moving a pen on a chart to record rainfall over time.
• Symons rain gauge: This is a non-recording type. It's a simple cylinder that collects rain, which is then manually measured using a dipstick or by volume after a specific period.
• Weighing type rain gauge: This is a recording type. It measures rainfall based on the weight of the collected water, often using a spring or load cell mechanism to record data.
• Tipping bucket rain gauge: This is a recording type. It measures rainfall in discrete amounts as a small bucket tips when a certain volume of rain collects, triggering an electronic count.

Conclusion

Based on the analysis, the Symons rain gauge is the only non-recording type among the options provided. The others automatically record rainfall data.