Spherometer Double Disc Manufacturer,Supplier and Exporter in India
Product Code : EL-MI-2122
Jlab Export is a leading Spherometer Double Disc Manufacturer,and suppliers in India
Spherometer Double Disc (code EL-MI-2122) is a spherometer with a 50 mm circular metal table, used to measure the curvature of lenses and spherical mirrors in physics practicals. Three accurately positioned, black-painted steel legs carry the table, and the steel screw runs in a long adjustable brass bearing, so a circular scale on the thread and a scale on the table give micrometer-type readings. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Table | Circular metal table, 50 mm diameter |
| Legs | Three, accurately positioned; steel, black painted |
| Screw | Ordinary steel screw thread working in a long adjustable brass bearing |
| Scales | Circular scale carried on the thread; linear scale on the table |
| Reading type | Micrometer-type readings |
| 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-MI-2122 |
| 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 | Body | Screw and legs | Scales (as listed) |
|---|---|---|---|
| This spherometer (EL-MI-2122) | Circular metal table, 50 mm | Steel screw in a long adjustable brass bearing; black-painted steel legs | Circular scale on the thread, scale on the table |
| Spherometer Double Disc (Stainless Steel) | Double disc | Stainless steel screw and legs | Not detailed on its page |
| Spherometer Disc Type | Small metal frame; lacquered brass disc | Fine-pitch screw; black-painted steel legs | 10-0-10 mm main scale; 100 (or 50) circular divisions |
| Spherometer Laboratory | Brass dial head, 40 mm | Stainless steel screw, 1 mm pitch; stainless steel legs | 10-0-10 vertical scale; 100 divisions reading to 0.01 mm |
Pick this model when you want a round table and a screw guided by a long, adjustable brass bearing; pick the stainless steel double disc if you prefer a stainless screw and legs.
What Is the Double-Disc Spherometer Used For?
Students use a spherometer in the class 11 physics practical on the radius of curvature of a spherical surface, and it serves the same purpose in college optics labs. The three legs rest on the surface, the centre screw is brought down until it just touches, and the readings are compared with those taken on a flat glass plate to give the sagitta h. With the mean leg spacing l, the radius is R = l²/6h + h/2. The long brass bearing guides the screw along its whole travel; approach the surface turning in one direction only, and keep the thread clean and lightly protected from dust.
What to Specify When Ordering
- Model — this steel-screw version or the stainless steel double disc.
- Pitch and circular-scale divisions — not stated on this listing; ask for them in your enquiry if your practical sheet needs a particular least count.
- Quantity — the minimum order is 10 units.
Frequently Asked Questions
What is the least count of the Spherometer Double Disc?
The listing does not give the pitch or the number of circular-scale divisions, so the least count is not stated. It equals the pitch divided by the number of divisions; JLab can confirm both with your quote.
What is the screw bearing made of?
The ordinary steel screw thread works in a long, adjustable brass bearing, which steadies the screw as it moves.
How is it different from the stainless steel double disc?
This model has a steel screw and black-painted steel legs; the other is listed with the screw and legs in stainless steel. No other differences are given on the two listings.
Who manufactures this spherometer?
JLab (Jain Laboratory Instruments Pvt Ltd) makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
This spherometer is made by Jain Laboratory Instruments Pvt Ltd (JLab), a school and college physics lab equipment manufacturer in India incorporated in 2017 and located on Hargolal Road, Ambala, Haryana. It is produced at JLab’s own works rather than bought from a trader, so buyers — schools, colleges, dealers and importers — get factory-direct supply, every unit is visually checked before dispatch, and repeat orders are handled by the maker. JLab exports worldwide and ships to buyers in every region — for example Indonesia in Southeast Asia, Malawi in East Africa, Bahrain in the Middle East, Hungary in Eastern Europe and Guyana in South America. See the lab tenders page for tender buying.
Related Spherometers and Measuring Instruments
- Spherometer Disc Type — a frame-type spherometer with a centre-zero main scale.
- Spherometer Double Disc (Stainless Steel) — the double disc with stainless steel screw and legs.
- Micrometer Screw Gauge — the screw-and-circular-scale instrument for wire and sheet measurements.
Browse the Measuring Instruments range or the wider Indian Instruments range.
Request a Quote
Ask the manufacturer directly: use the Add To Cart enquiry button, or send the quantity (minimum 10 units) and your delivery location through the contact page.
Last updated: 9 October 2026
