Question: The standard height of the standard rain gauge is
Options:
60 cm
50 cm
40 cm
30 cm
🌧️ Symon’s Rain Gauge
→ Standard non-recording type rain-gauge used in India is Symon’s rain gauge, which has a height of 30.5 cm (approximately 1 ft) and a diameter of 12.7 cm.
→ Symon’s rain gauge is also called the 5-inch rain gauge. It is suitable for measuring rainfall > 0.1 mm of depth.
📌 Important Points
→ The details of installation of non-recording rain gauges are specified in IS-4986 (1968).
🌦️ Natural Syphon Type Rain Gauge
→ Standard recording type rain gauge used in India is Natural Syphon type rain gauge.
→ Natural Syphon type rain gauge is used for precise measurement and can measure rainfall < 0.1 mm of depth as well.