Apex Labs Professional Single Disk Spherometer – Precision Brass Dial for Optical Curvature Measurement

The Apex Labs Single Disk Spherometer is engineered for high-accuracy measurements of the thickness of small plates and the radius of curvature of spherical surfaces. Constructed with a robust black-finished tri-pod base and a high-contrast brass circular scale, this instrument is designed to provide consistent, repeatable results in academic and industrial settings.

The central screw is precision-threaded, moving a stainless steel tip that works in conjunction with the vertical linear scale and the rotating disk scale. This dual-scale system allows users to measure minute changes in height with extreme sensitivity, making it ideal for determining whether a surface is perfectly flat, concave, or convex.

Key Features

• High-Grade Brass Dial: Features a large, easy-to-read circular scale with clear graduations for precise readings.

• Three-Legged Stability: The reinforced black frame ensures the instrument remains perfectly level on flat or curved surfaces.

• Vertical Linear Scale: Includes a fixed brass vertical scale for tracking full rotations of the central screw.

• Precision Micrometer Screw: Fine-threaded central screw provides smooth movement and high resolution.

• Corrosion Resistant: Built with high-quality alloys to withstand laboratory environments without losing accuracy.

• Apex Labs Quality: Hand-inspected in Varanasi to ensure zero-error calibration for educational use.

Common Applications

• Physics Experiments: Measuring the focal length and radius of curvature ($R$) of optical lenses.

• Optical Manufacturing: Quality control for checking the flatness of glass slides and mirrors.

• Engineering Labs: Measuring the thickness of thin metal sheets or plates where calipers might fail.

• Educational Training: Teaching students the principles of micrometer screws and pitch measurements.