Measurement method and device for facilitating the mounting of c

Details Measurement method and device for facilitating the mounting of c Measurement method and device for facilitating the mounting of c

1983-10-27

1985-07-30

Little, Willis

Geometrical instruments

Gauge

Spectacle

33507, 351204, A61B 310

Patent

active

045312974

ABSTRACT:
A measurement device for the mounting of corrective glasses on a spectacle frame. The device has a transparent support for plate 4, the upper part 6 of which is opaque and is provided with a slot 5 acting as an origin for horizontal graduations 4a which are used for the measurement. The device is used for the determination of the height H separating the center of the pupil of the eye from the lowest part 3 of the interior of the spectacle frame circle 2.

REFERENCES:
patent: 1675407 (1928-07-01), Dvorine
patent: 2632257 (1953-03-01), Belgard
patent: 2677894 (1954-05-01), Belgard
patent: 3987554 (1976-10-01), Pastore
patent: 4208800 (1980-06-01), Grolman et al.

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