Optical Bench with 3 Stands Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-12432
Jlab Export is a leading Optical Bench with 3 Stands Manufacturer,and suppliers in India
Optical Bench with 3 Stands (code EL-PL-12432) is a one-metre metal double-rod optical bench for lens and mirror practicals. One stainless steel rod is graduated in millimetres and a second rod is of steel; both are carried on heavy cast iron feet with levelling screws, and index-marked metal sliders give each position on the scale. The whole bench, rods, feet and sliders, is JLab’s own manufacture from Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL388/092 |
| Type | Metal double-rod optical bench |
| Length | One metre |
| Rods | One stainless steel rod graduated in mm; one steel rod |
| Feet | Heavy cast iron, with levelling screws |
| Sliders | Metal, index-marked for reading on the scale; two with transverse slow-motion adjustment |
| Quality check | Each optical bench is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-PL-12432 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Taking Readings Without Parallax
Level the bench with the screws in the feet, then mount the object needle, the lens or mirror, and the image needle. To locate a real image, move the image needle until its tip and the tip of the image stay together as you move your eye from side to side. The transverse slow motion on two of the sliders brings the tips into line sideways first, so only the distance along the bench remains to be found.
Working Out f by the u–v Method
With the object distance u and image distance v measured from the lens or mirror, and counted positive for real objects and images, 1/f = 1/u + 1/v for both a concave mirror and a convex lens. Plot 1/v against 1/u for several pairs of readings; the line cuts each axis at 1/f. Beforehand, find the index correction: set a rod of known length between a needle tip and the lens and compare it with the difference of the index readings; apply the correction to every u and v.
Mirrors and Lenses for the Bench
- Concave Mirror — 50 mm converging mirror in 15 cm or 25 cm focal length.
- Convex Mirror — diverging mirror, 50 mm across, with the same two focal lengths.
- Convex Lens — 50 mm lens of 20 cm focal length with ground edges.
Lenses, mirrors and other optics items are collected in Physics Lab.
Request a Quote
Start an order with Add To Cart, or use the contact page with the number of benches and the delivery address.
Last updated: 26 October 2026
