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 students count revolutions to work out the air speed. As school physics lab equipment in India, it suits weather topics, geography practicals and lessons on air flow. Science Lab Supplies, a science apparatus manufacturer in India, builds the instrument at its Saha, Ambala plant and delivers it directly to schools, colleges, distributors and contractors handling tenders.
Specifications
Four hemispherical polymer cups are set at right angles on steel support arms around a vertical spindle with a low-friction ball-bearing pivot. One cup carries a contrast marking for counting turns, and the spindle rod screws into a weighted cast metal base plate, so the rotor can also be moved to another mount.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-12124 |
| Rotor | 4 hemispherical cups at right angles |
| Cup material | High-impact polymer |
| Pivot | Low-friction ball-bearing spindle |
| Base | Weighted cast metal base plate; spindle rod detachable |
| Reading method | Count revolutions of the marked cup (rpm) and convert with the calculation charts |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the 4-Cup Anemometer
The anemometer shows students how a rotating cup rotor turns moving air into a speed they can count. It is 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.
- 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
Ask for a quotation for one anemometer or a set for every group. Science Lab Supplies prices each quantity separately, gives the packing and delivery time on the same quotation, and can add stopwatches.
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). Enquiries go through the contact page or enquiry cart, and tender buyers can refer to the lab tender page.
Frequently Asked Questions
How do students get a wind speed from the rotor?
They count turns of the marked cup over a timed minute to get revolutions per minute, then convert that figure 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?
Science Lab Supplies manufactures the anemometer itself at its Ambala factory in Saha, so quotations, packing and dispatch are all handled directly by the maker.
Related Timing and Weather Instruments
Counting rotor turns needs a timer, and wind readings can be logged beside temperature and humidity. These four items from the physics range fill those roles for a weather-observation or timing activity, and all can share the anemometer’s quotation.
- School Digital Stopwatches — 1/100 s resolution with lap and split timing.
- Digital Stopwatch — 1/100 s timing with date display and alarm.
- Analog Timing Experiment Clock — manual interval timer for experiments.
- Digital Thermo-Hygrometer — shows temperature (0–50 °C) and humidity.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
