Anemometer Model 4-cup
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Product Code : SCL-PL-12124
Anemometer Model 4-cup (SKU SCL-PL-12124) is a cup anemometer for teaching how wind speed is measured: four hemispherical cups turn a vertical spindle, and the revolutions are counted to work out the air speed. As school physics lab equipment in India, it suits weather topics, geography practicals and lessons on air flow. The instrument is manufactured by Science Lab Supplies at Plot 448, HSIIDC Industrial Area, Saha, Ambala, and quoted without intermediaries to schools, colleges, distributors and tender contractors.
Specifications
Each construction detail of the 4-cup rotor and its stand appears as a row below. In short, four polymer cups on steel arms sit at right angles around a spindle with a low-friction ball-bearing pivot, one cup is marked for counting, and the spindle rod screws into a weighted cast metal base.
| Specification | Value |
|---|---|
| SKU | SCL-PL-12124 |
| Rotor | 4 hemispherical cups set at right angles |
| Cup material | High-impact polymer |
| Support arms | Steel supporting rods |
| Pivot | Low-friction miniature ball-bearing pivot |
| Spindle | Vertical rod that threads into the base |
| Rotor mounting | Detachable; can be moved to a weather-station bracket |
| Base | Weighted cast metal base plate |
| Counting aid | Orientation markings on one cup |
| Metal finish | Plated, resists outdoor moisture |
| Measuring metric | Revolutions per minute / relative wind speed |
| Conversion | Calculation charts to m/s or km/h |
| Application | Weather observation, physics mechanics labs, meteorology training |
| Outdoor use | Teaching model, not a permanent all-weather station sensor |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the 4-Cup Anemometer
The anemometer shows how a rotating cup rotor turns moving air into a speed that can be counted. It can be used for outdoor wind surveys around the school, indoor tests in front of a fan, and lessons that link physics with weather study and environmental science.
- School science and geography: measuring wind speed as part of weather observation, timing one minute on a Digital Stopwatch or the Analog Timing Experiment Clock.
- Physics: drag on concave versus convex surfaces, and why the rotor turns.
- School weather station and environmental science projects comparing wind at different sites.
Standard Scope of Supply
Each set contains the 4-cup rotor assembly with its support arms, the low-friction vertical spindle rod, the weighted cast base, and an instruction manual with wind velocity calculation charts. A stopwatch for timing the revolutions is not part of the set and can be quoted separately.
Packing, MOQ and Lead Time
A quotation can be drawn up for one anemometer or for enough instruments to give every group its own. Science Lab Supplies prices the exact quantity, states packing and delivery time on the same document, and can add stopwatches, a wind vane or a barometer for a complete weather-observation corner.
With an Importer-Exporter Code on record as a registered exporter, Science Lab Supplies is able to ship to buyers in Ghana, Ethiopia, Tanzania, Uganda, the UAE and Saudi Arabia. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). To get a price, describe the quantity on the contact page, add the anemometer to the enquiry cart, or follow the lab tender page if the purchase is part of a tender.
Frequently Asked Questions
How is a wind speed obtained from the rotor?
Turns of the marked cup are counted over a timed minute to get revolutions per minute, and that figure is converted to metres per second or kilometres per hour with the calculation charts in the manual.
Why does the rotor turn in the wind?
Air meets more drag on the open concave side of each cup than on the rounded convex back, so the push is uneven and the spindle spins at a rate that rises with wind speed.
Can the anemometer stay outdoors permanently?
It is designed as a portable teaching model. The polymer cups and plated metal parts resist rust, but it is not a permanent all-weather station sensor, so bring it indoors after use.
Is Science Lab Supplies the manufacturer or a trader?
The anemometer is produced in the company’s own factory in Saha, Ambala, which makes Science Lab Supplies its manufacturer; quotations, packing and dispatch therefore come straight from the maker rather than through an agent.
Related Weather and Timing Instruments
Wind speed readings mean more alongside wind direction, air pressure, humidity and accurate timing. These instruments from the Physics Lab, Physics Miscellaneous and Chemistry Lab ranges add those readings or offer other cup-anemometer designs, so a full weather-observation activity can be set up on one quotation with the 4-cup model.
- Simple Cup Anemometer — three hemispherical plastic cups joined to a central hub by spokes.
- Cup Anemometer with Digital Display — three cups on ball bearings with a direct digital wind-speed reading.
- Cup Anemometer with Analog Display — three plastic cups read through a moving analog meter.
- Wind Vane — balanced, low-friction vane for indicating wind direction.
- Aneroid Barometer — dial barometer reading 960–1060 hPa and 720–795 mmHg.
- Psychrometer (with Thermometer) — air humidity on a 0–100% scale plus temperature from −30 to 50 °C.
- Digital Thermo-Hygrometer — 125 x 99 mm humidity and temperature monitor with a big-digit LCD.
- School Digital Stopwatches — lap and split timing to 1/100 s on one LR44 battery.
Browse the full Physics Lab range, the Physics Miscellaneous Products range for further wind instruments, or all physics lab equipment.
Last updated: 22 October 2026
