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Ball & Ring Apparatus
Ball & Ring Apparatus (Product Code: SLE/PHY/134) is a two-piece thermal expansion demonstrator used to show that a heated metal ball will no longer pass through a ring it cleared when cold, in school and college physics laboratories. Its brass ball, 22 mm in diameter, and brass ring each sit on a brass rod with a wooden handle, so they can be held safely over a flame. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Two-piece apparatus for demonstrating thermal expansion |
| Ball | Brass, 22 mm diameter |
| Ring | Brass |
| Mounting | Ball and ring each individually mounted on a brass rod |
| Handles | Wooden, one on each rod |
| Product code | SLE/PHY/134 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Ball and Ring Apparatus Used For?
The ball and ring apparatus gives a quick, visible proof that solids expand when heated. At room temperature the ball slips through the ring; the teacher then warms the ball in a Bunsen or spirit-lamp flame and tries again, and this time the ball rests on the ring instead of dropping through. As it cools, it falls through once more, which shows contraction on cooling as well.
A second run, heating the ring instead of the ball, lets students test their prediction of what happens to a hole when the metal around it expands. This makes it a staple of school physics lab equipment in India for the heat chapter. Hold the parts only by the wooden handles, rest the hot brass on a heat-proof mat, and let it cool in air rather than quenching it.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of this Ball & Ring Apparatus. It is made and assembled at the company's own licensed factory at Saha, Ambala, Haryana, India, rather than bought in from a trader, and goes factory-direct to schools, colleges, dealers and importers in India and international markets. Repeat orders and replacement parts are handled by the manufacturer itself, so ask us about availability. More background is on the ScienceLab company profile.
Related Physics Lab Equipment
These items are used alongside the ball and ring in heat and expansion lessons:
- Bar & Gauge Apparatus — shows the same effect with an iron bar tested against a brass gauge.
- Bimetallic Strip — shows that brass and steel expand by different amounts.
- Gravesand Ring-Device to Demonstrate Thermal Expansion — an alternative ring-type expansion demonstrator.
- Bunsen Burner — the usual heat source for warming the ball or the ring.
- Expansion Of Liquids Apparatus — extends the lesson from solids to liquids.
See the complete Physics Lab Equipment range for more heat apparatus.
Frequently Asked Questions
What does the Ball & Ring Apparatus include?
The Ball & Ring Apparatus is a two-piece set: a brass ball 22 mm in diameter and a brass ring, each mounted individually on its own brass rod with a wooden handle. A flame source such as a Bunsen burner is not part of the set and is ordered separately.
How does the Ball & Ring Apparatus demonstrate thermal expansion?
With the Ball & Ring Apparatus, students first pass the cold ball through the ring, then heat the ball in a flame and try again. The expanded ball no longer passes through, and once it cools it slips through again, showing both expansion and contraction of a solid.
Why do the Ball & Ring Apparatus parts have wooden handles?
The wooden handles on the Ball & Ring Apparatus keep hands away from the hot brass, because wood conducts heat far less than metal. Students can hold the ball and ring over a flame and bring them together without touching the heated parts.
Who manufactures the Ball & Ring Apparatus?
The Ball & Ring Apparatus is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Schools, colleges and dealers buy it factory-direct, with quotations and repeat orders handled by the manufacturer.
Is a calibration certificate available for the Ball & Ring Apparatus?
The Ball & Ring Apparatus is a qualitative demonstration piece rather than a measuring instrument, so it is not normally calibrated. If your tender asks for any test or inspection document, please discuss it with us through the contact page before ordering.
What should a quotation request for the Ball & Ring Apparatus include?
For a Ball & Ring Apparatus quotation, give the product code SLE/PHY/134, the number of sets, your delivery address and whether you also need burners or other expansion apparatus. The quotation then covers everything for your heat practicals in one reply.
Can the Ball & Ring Apparatus be supplied in bulk for export?
Yes, the Ball & Ring Apparatus can be supplied in quantity to school networks, dealers and importers in India and international markets. Share the quantity and destination through the enquiry cart or contact page, and packing and shipping details are confirmed in the quotation.
Request a Quote
To price the Ball & Ring Apparatus, send your quantity through the contact page or add it to the enquiry cart. Quotations come direct from the manufacturer in Ambala.
Last updated: 24 September 2026
