Spherometer (50mm) Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4734
Jlab Export is a leading Spherometer (50mm) Manufacturer,and suppliers in India
Spherometer (50mm) (code EL-SLE-4734) is a 50 mm spherometer used to measure the radius of curvature of spherical surfaces, such as lenses and curved mirrors, in school and college physics labs. Its disc and scales are lacquered brass and its legs are black-painted steel. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Instrument | Spherometer, for measuring the radius of curvature of spherical surfaces |
| Size | 50 mm (as listed; the listing does not state which dimension this refers to) |
| Disc and scales | Brass, lacquered |
| Legs | Steel, black painted |
| Quality check | Each spherometer is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-4734 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Spherometers?
| Model | Listed details |
|---|---|
| This spherometer (EL-SLE-4734) | 50 mm; lacquered brass disc and scales; black-painted steel legs |
| Spherometer Double Disc | Circular metal table 50 mm in diameter; three black-painted steel legs; steel screw thread in a long adjustable brass bearing; circular scale on the thread and a scale on the table |
| Spherometer Disc Type | Small metal frame on three legs at the corners of an equilateral triangle; a fine-pitch screw through the centre forms the fourth leg; main (pitch) scale on a metal strip |
Choose this model when a 50 mm spherometer with a lacquered brass disc and scales suits your practical sets. The double-disc listing describes its screw bearing and scales in more detail, and the disc-type listing describes the classic frame-and-screw layout; compare the pages or ask JLab if your tender names a particular pattern.
What Is the Spherometer Used For?
A spherometer finds the radius of curvature of a convex or concave surface, such as a lens, a curved mirror or a watch glass. It is one of the basic physics lab instruments in the class 11 practical “to determine the radius of curvature of a given spherical surface by a spherometer”, and it is also used in college optics and measurement labs. The three outer legs rest on the surface while the central screw is turned until its tip just touches; the reading combines the pitch-scale value with the number of disc divisions multiplied by the least count, which equals the screw pitch divided by the number of divisions on the disc.
Students first take a zero reading on a flat glass plate, then a reading on the curved surface; the difference is the height of the curve between the legs. Pressing the legs lightly on paper marks their positions, so the distance between them can be measured, and the radius of curvature is then calculated from that distance and the height. Turn the screw gently as the tip meets the surface, keep the screw clean and store the spherometer in its box so the tip and legs are not knocked.
What to Specify When Ordering
- Model — this 50 mm spherometer, or the double-disc or disc-type pattern if your syllabus or tender asks for one.
- Pitch and least count — if your practical sheet assumes a particular least count, state it so JLab can confirm what the supplied spherometer reads.
- Quantity — the minimum order is 10 spherometers; physics labs often plan one per student group.
- Test surfaces — add convex and concave lenses or a plane glass reference surface to the same enquiry if you need them; they are separate items.
Frequently Asked Questions
What is this spherometer used for?
Measuring the radius of curvature of spherical surfaces. Schools use it for the class 11 physics practical on lenses and curved surfaces, and colleges use it in optics and measurement labs.
What does “50 mm” refer to?
The listing gives the size as 50 mm but does not say which dimension it is. If the exact disc diameter or leg spacing matters for your practical, ask JLab to confirm it in the quotation.
What is the spherometer made of?
The disc and scales are lacquered brass and the legs are steel with a black painted finish. The listing does not state the screw material.
What is its least count?
It is not stated in this listing. On any spherometer the least count is the pitch of the screw divided by the number of divisions on the disc; ask JLab for both values when you enquire, and check the instrument against them before the first practical.
Are lenses or a glass plate included?
No, this listing covers the spherometer only. Convex lenses, concave lenses and other test surfaces are separate catalogue items that can be added to the same enquiry.
What should an export enquiry include?
The quantity, the destination country and port or city, your preferred delivery terms such as FOB or CIF, any packing or labelling instructions, and the tender reference if you are buying against a tender.
Who manufactures this spherometer?
Jain Laboratory Instruments Pvt Ltd (JLab) makes it at its works in Ambala, Haryana, India, and quotes for it directly.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a maker of physics lab equipment for schools and colleges in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The spherometer is produced at JLab’s own works, not sourced from a trader, so schools, colleges, dealers and importers order it factory-direct; every unit is visually inspected before it is packed, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — for example Uruguay in South America, the UK in Western Europe, Afghanistan in South Asia, the USA in North America and El Salvador in Central America and the Caribbean. Institutions buying through a tender can find details on the JLab lab tenders page.
Related Optics and Measuring Instruments
- Convex Lens — convex lenses in a range of focal lengths, a common surface to measure with the spherometer.
- Concave Lens — concave lenses in a range of focal lengths for the same practical.
- Vernier Calliper — a chrome-plated steel double-scale calliper, useful for measuring the distance between the spherometer legs.
- Screw Gauge — a micrometer screw gauge, the other screw-based measuring instrument in school physics practicals.
Browse more items in the School Lab Equipment range, which groups the school physics, chemistry and biology apparatus that JLab makes.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the quantity (minimum 10 units), any least-count requirement, the lenses or other items you want with it, and your delivery location through the contact page.
Last updated: 4 October 2026
