Linear Expansion Apparatus
Product Code : LSK-H-11156
Linear Expansion Apparatus (SKU LSK-H-11156) measures how much a metal rod lengthens when heated by steam. The rod sits inside a steam chamber, or heat jacket, and its expansion registers at once on an indicator mounted at one end, so students see the change as it happens. It is used to find the coefficient of linear expansion in Class 11 physics and in college heat practicals. Science Lab Supplies manufactures the apparatus at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and offers it straight to institutions and dealers.
Specifications
Each specification of the steam-jacket expansion apparatus appears in the table below. In short, a metal test rod passes through a heat jacket fitted with three tubes for water intake, outlet and a thermometer, while an indicator at one end shows the expansion; the steam source is not provided.
| Specification | Value |
|---|---|
| SKU | LSK-H-11156 |
| Test specimen | Metal rod inserted into the steam chamber |
| Heating method | Steam applied through a heat jacket |
| Jacket tubes | 3: water intake, outlet and thermometer insertion |
| Expansion reading | Indicator mounted at one end of the rod |
| Response | Expansion registered immediately |
| Steam source | Not provided |
| Demonstrates | Linear expansion of metals |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Linear Expansion Apparatus
Students record the rod length and starting temperature, pass steam through the jacket and read the expansion on the indicator once the temperature settles. Dividing the change in length by the original length and the temperature rise gives the coefficient of linear expansion for that metal.
- Class 11 physics: determining the coefficient of linear expansion of a metal rod, with the jacket temperature read on a Glass Thermometer.
- Following up a qualitative demonstration such as the Ball and Ring Apparatus with a measured result.
- B.Sc., polytechnic and diploma heat practicals on thermal expansion of solids.
- Discussing expansion allowances in rails, bridges and pipelines.
Steam and the heated jacket can scald. Run the experiment under supervision, secure all tubing before admitting steam, and let the apparatus cool before removing the rod.
Standard Scope of Supply
The apparatus comes with its heat jacket and three tubes, the metal test rod and the end-mounted expansion indicator. The steam source is not provided, so the laboratory supplies its own steam generator; a thermometer can be listed on the same quotation if required.
Packing, MOQ and Lead Time
Tell us whether you need a single apparatus or one for each group in a heat practical. Science Lab Supplies prepares a quotation giving the packing, delivery time and price for that quantity, and thermometers or related heat apparatus can be priced on it as well.
Science Lab Supplies is registered as an exporter under an Importer-Exporter Code and 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). Begin with the contact page for a direct quote, the enquiry cart for a multi-item list, or the lab tender page for tender supply.
Frequently Asked Questions
Is a steam generator included?
No. The steam source is not provided with the apparatus. Laboratories connect their own steam generator or boiler to the jacket tubes, and the quotation lists only the apparatus unless other items are requested.
What are the three tubes on the jacket for?
One tube is the intake, one the outlet, and the third takes a thermometer, so the temperature inside the jacket can be read while steam flows around the rod.
How is the expansion read?
An indicator is mounted at one end of the rod. As steam heats the metal, the indicator registers the increase in length immediately, so students can watch the expansion rather than calculate it afterwards.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The jacket, rod and indicator are built at its Saha, Ambala facility, and every quotation for the apparatus is issued directly by that factory.
Related Heat and Expansion Apparatus
These items cover the other expansion, conduction and temperature experiments that sit beside a linear expansion practical. Any of them can be added to one quotation with the linear expansion apparatus when equipping a heat section in a school or college laboratory.
- Pyrometer — three test rods of different metals heated by a spirit furnace.
- Expansion of Liquid Apparatus — compares the expansion of several liquids over one temperature range.
- Bimetallic Strip — 200 x 15 mm brass and steel strip riveted together.
- Searle's Thermal Conductivity Apparatus — copper rod with a steam jacket at one end and a cooling spiral at the other.
- Lee's And Charlton's Apparatus — 11 cm brass slab and steam chest for thin layers of material.
- Constant Level Tank — copper vessel with inlet, outlet and overflow tubes for steady water flow.
- Thermometer (with no Mercury) — slim glass stem reading −10 to 120 °C.
Browse the full Heat range, the Properties of Matter range for liquid expansion and gas-law apparatus, or all physics lab equipment.
Last updated: 9 October 2026