1. an instrument for measuring the curvature of spherical surfaces
Usage: scientific instrument

Examples

• The optician used a spherometer to measure the curvature of the lens.
• Students in the physics lab learned to operate the spherometer carefully.
• The spherometer revealed that the mirror’s surface was not perfectly curved.
• Quality control technicians rely on spherometers to check ball bearings.
• The antique spherometer was made of brass and still functioned perfectly.
• She calibrated the spherometer before taking measurements of the glass sphere.