Height measurement gage for multifocal lenses

Details Height measurement gage for multifocal lenses Height measurement gage for multifocal lenses

1982-12-03

1985-03-19

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33200, 351228, A61B 310

Patent

active

045050430

ABSTRACT:
A device designed to aid in fitting eyeglasses and, more particularly, bifocals and multifocals by accurately measuring the distance from the center of the pupil to the lower edge of the frame.

REFERENCES:
patent: 1263713 (1918-04-01), Smith
patent: 1935175 (1933-11-01), Clement
patent: 1981438 (1934-11-01), Smith
patent: 4208800 (1980-06-01), Grolman et al.

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