When spectacles are laid down on a hard surface they should rest on the edges of the rims. If the lenses are allowed to touch a desk or table-top they may become scratched, and on convex glasses the scratches will all tend to be in the centre. Although minute these marks damage the lenses considerably. The frames of eyeglasses and spectacles are liable to be strained if one eye-piece is held while the ether is polished. Each lens should tie held by it own rim while it is wiped and oolished.
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https://paperspast.natlib.govt.nz/newspapers/THD19350105.2.112.5
Bibliographic details
Timaru Herald, Volume CXXXIX, Issue 19999, 5 January 1935, Page 14
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91Untitled Timaru Herald, Volume CXXXIX, Issue 19999, 5 January 1935, Page 14
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