Mechanics of Fitting Glasses
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Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. How to ascertain the position of the plus and minus cylinder in compound lenses by simple inspection. How to construct a chart to measure prisms and to detect a prism power in lenses.
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Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. How to ascertain the position of the plus and minus cylinder in compound lenses by simple inspection. How to construct a chart to measure prisms and to detect a prism power in lenses.
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