Measuring set for determination of the sagittal depth and the average central curvature of gel contact lenses

The invention pertains to a measuring set for determination of the sagittal depth and the average central curvature of soft contact lenses which consists of two measuring units based on the principle of depth gauges and the common electronic indication part. The apparatus serves for rapid and inexpe...

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Hauptverfasser: SVANTNER, JIRI, WICHTERLE, OTTO
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creator SVANTNER, JIRI
WICHTERLE, OTTO
description The invention pertains to a measuring set for determination of the sagittal depth and the average central curvature of soft contact lenses which consists of two measuring units based on the principle of depth gauges and the common electronic indication part. The apparatus serves for rapid and inexpensive selection of the correct contact lens according to the shape and peculiarities of the patient eye. Each measuring unit consists of a fixed part formed by a support plate, a stable conductive hollow screw, and a coaxially fitted conductor insulated from the screw and protruding above the insulation, and a movable part formed by a conductive nut bearing an insulation bushing for the protruding conductor and a scale and put on the screw.
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subjects MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
title Measuring set for determination of the sagittal depth and the average central curvature of gel contact lenses
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