spherometer
1 of 1noun/sfɪˈrɑmɪtər/
Forms:spherometers
1
a measuring tool used to determine the roundness of a curved surface
- To pass inspection, the ball bearings needed a spherometer reading within tight tolerances for its spherical shape and diameter.
- The spherometer is an important instrument for testing the geometry and sphericalness of balls, bearings and other spherical components.
- Opticians check the curve of contact lenses with a spherometer to ensure the proper prescription sphere is matched.