Quick Answer: A disc-type spherometer used to measure the radius of curvature of curved surfaces such as lenses, consisting of a vertical screw through a tripod-legged circular disc with linear and circular scales.
Price: This listing does not currently show a published price on stemaids.com — contact STEMAids directly for an indicative quotation.
Product Description
This disc-type spherometer consists of a vertical screw passing through the center of a circular metal disc. The disc is supported by three fixed metal legs (tripod) that form an equilateral triangle. As the central screw is rotated, it moves vertically against a linear vertical scale and a circular scale engraved on the disc itself. By measuring the difference between the screw’s zero position on a flat reference surface and its contact point on a curved surface, the sagitta (height difference) can be used together with the known tripod leg spacing to calculate the radius of curvature of the surface being measured — a standard technique in optics and physics education.
Specifications
| Specification | Detail |
|---|---|
| Type | Disc-type spherometer |
| Support | Tripod, three fixed metal legs (equilateral triangle) |
| Scale | Linear vertical scale plus circular scale on the disc |
| Intended use | Measuring radius of curvature of lenses and curved surfaces |
Applications / Uses
- Measuring the radius of curvature of lenses in optics experiments
- Physics demonstrations of curvature measurement techniques
- General precision measurement in educational and research labs
Care & Maintenance
- Handle the central screw gently to avoid damaging the fine threading
- Store on a flat, stable surface to protect the tripod legs from bending
- Clean the disc and legs to keep the scale markings legible
- Zero the instrument on a flat reference surface before each measurement
Why Choose STEMAids
STEMAids, a brand of Eduscope Smart Learning Solutions Private Limited, supplies general laboratory equipment and teaching aids to schools, colleges, and training institutes across India, with export and bulk tender support available. Explore related products in our General Lab Products category, including our Colony Counter. For bulk or institutional orders, visit our tenders page or contact us at 9311411822.
Frequently Asked Questions
How does a spherometer measure curvature?
It measures the height difference (sagitta) between the screw’s position on a flat surface and its position on a curved surface, which, combined with the known tripod leg spacing, allows the radius of curvature to be calculated.
What is this spherometer used to measure?
It is commonly used to measure the radius of curvature of lenses and other curved optical surfaces in physics and optics education.
How precise is a disc-type spherometer?
Precision depends on the fineness of the screw thread and the scale graduations; exact precision specifications are not detailed in this listing — confirm with STEMAids.
Does this instrument need calibration?
Zero the instrument on a flat reference surface before each measurement session to help ensure accurate readings.
What is the indicative price for this product?
This listing does not currently show a published price on stemaids.com — contact STEMAids directly for an indicative quotation.
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