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Longitudinal Compressometer
Longitudinal Compressometer (Product Code: SLE/CE/21) is a ring-type strain-measuring frame used to record the axial shortening of concrete cylinders under compressive load in structural and materials testing laboratories. Students and testing engineers clamp its top and bottom rings onto the cylinder and read deformation on a 0.002 mm dial gauge, the data needed for a stress–strain curve. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Frame | Bottom ring and top ring |
| Clamping | Tightening screws clamp the compressometer firmly over the cylinder |
| Dial gauge | 0.002 mm × 5 mm, mounted on the upper ring |
| Gauge contact | Dial gauge tip rests on an anvil |
| Zero setting | By adjusting the anvil screw |
| Case | Supplied in a wooden carrying case |
| Product code | SLE/CE/21 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Longitudinal Compressometer Used For?
The compressometer is fitted to a concrete cylinder before it goes into the compression testing machine. As load is applied in steps, the rings move closer together and the dial gauge shows the shortening between them; dividing that change by the gauge length gives strain, and plotting stress against strain gives the static modulus of elasticity of the concrete.
Tighten the ring screws evenly so the frame sits square on the cylinder, then set zero with the anvil screw before loading starts. Remove the instrument before the specimen is taken to failure to protect the gauge. Used with a lateral extensometer on the same cylinder, it also supports Poisson's ratio experiments — one reason civil engineering colleges often order both from the same scientific instruments manufacturer in India.
OEM Manufacturer
ScienceLab, the trading name of Jain Scientific Equipments Private Limited, is the OEM of the Longitudinal Compressometer and makes it at its own licensed factory at Saha, Ambala, Haryana, India. Buying from the original manufacturer means the rings, screws and gauge mounting come from one source, and requests for replacement parts or repeat units go straight to the maker — ask us. The company supplies universities, polytechnics, testing laboratories, dealers and importers directly. Visit the ScienceLab company profile for more.
Related Civil Engineering Lab Equipment
A modulus-of-elasticity test needs specimens, a loading machine and strain measurement; these related products complete the set-up.
- Lateral Extensometer — records lateral strain on the same cylinder for Poisson's ratio.
- Automatic digital compression testing machine — applies the compressive load.
- Cylindrical Mould — for casting the concrete cylinders.
- Accelerated Curing Tank — for curing specimens before testing.
- Demountable Mechanical Strain Gauge — an alternative way to measure surface strain.
More strength and deformation testing apparatus is listed under Civil Engineering Lab Equipment.
Frequently Asked Questions
What is the Longitudinal Compressometer used for?
The Longitudinal Compressometer is used to measure the axial shortening of a concrete cylinder while it is loaded in compression. The readings give strain values from which the stress–strain curve and static modulus of elasticity of the concrete are worked out.
What dial gauge is fitted to the Longitudinal Compressometer?
The Longitudinal Compressometer carries a dial gauge of 0.002 mm × 5 mm mounted on its upper ring. The gauge tip rests on an anvil, so any movement between the rings shows directly on the dial.
How is the Longitudinal Compressometer set to zero?
The zero of the Longitudinal Compressometer dial gauge is set by adjusting the anvil screw on which the gauge tip rests. Set zero after clamping the frame to the cylinder and before any load is applied.
How is the Longitudinal Compressometer attached to the specimen?
The Longitudinal Compressometer has a bottom ring and a top ring fitted with tightening screws, which clamp the frame firmly over the concrete cylinder. Tighten the screws evenly so the rings sit square to the specimen axis.
Who manufactures the Longitudinal Compressometer?
The Longitudinal Compressometer is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM at its licensed factory at Saha, Ambala, Haryana, India, and is sold factory-direct to institutions, dealers and importers.
What cylinder size does the Longitudinal Compressometer fit?
The cylinder size for the Longitudinal Compressometer is not stated in this listing. Give your specimen diameter and height in the enquiry through the contact page so the manufacturer can confirm the fit before quoting.
How is the Longitudinal Compressometer packed?
The Longitudinal Compressometer is supplied in a wooden carrying case, which protects the rings and the dial gauge during transport and storage. Returning it to the case after each test also helps keep the gauge in good condition.
Request a Quote
To request a quotation for the Longitudinal Compressometer (SLE/CE/21), use the contact page or the enquiry cart. Quotations are issued directly by the manufacturer, Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala.
Last updated: 24 September 2026
