Measuring instrument for establishing the angle of tilt of a lens mounting rim of a spectacles frame
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United States of America Patent
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-
Aug 30, 2005
Grant Date -
Dec 11, 2003
app pub date -
Feb 28, 2003
filing date -
Apr 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A measurement instrument for establishing an angle by which each lens-mounting rim of a spectacles frame having two lens-mounting rims joined by a spectacles bridge is tilted in a horizontal plane in front of an eye of a spectacles wearer comprises a supporting plate onto which a spectacles frame can be positioned with the upper or lower outside edges of the lens-mounting rims downward; a marking line on the surface of the supporting plate for alignment of the spectacles frame; and at least one adjustable means permitting measurement of an angle between an imaginary line connecting a nasal and a temporary edge of a lens-mounting rim and the marking line.
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