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; see sphero-, -meter

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Example Sentences

See Examples For:

spherometer

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

From On Laboratory Arts by Richard Threlfall

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 Scientific American Supplement, No. 484, April 11, 1885 by Various

A check by spherometer will be applied at intervals according to the judgment of the operator, but, in any case, the fellow tool and lens should be kept at very nearly the same figure.

From On Laboratory Arts by Richard Threlfall

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 On Laboratory Arts by Richard Threlfall

Here is a very fine spherometer that Dr. Hastings works with from time to time, and which he calls his standard spherometer.

From Scientific American Supplement, No. 484, April 11, 1885 by Various

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