spherometer

American  

[sfi-rom-i-ter] / sfɪˈrɒm ɪ tər /

noun

1. an instrument for measuring the curvature of spheres and curved surfaces.

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spherometer British  

/ sfɪəˈrɒmɪtə /

noun

1. an instrument for measuring the curvature of a surface

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Etymology

Origin of spherometer

1820–30; < French sphéromètre; sphero-, -meter

Example Sentences

The process of fine grinding is continually checked by the spherometer, and the art consists in knowing how to move the grinding tool so as to make the lens surface more or less curved.

From Project Gutenberg

Many devices have been added to the spherometer to make it as sensitive as possible, such as the contact level, the electric contact, and the compound lever contact.

From Project Gutenberg

After a little practice it will be found possible to bring the glass exactly up to the required curvature as tested by template or spherometer.

From Project Gutenberg

It is well to control this process by means of a spherometer, so that the desired radius may be approximately reached.

From Project Gutenberg

Before the grade of emery is changed all three surfaces must agree, as nearly, at least, as the spherometer will show.

From Project Gutenberg