Gallery›Digital Commonwealth — Boston Public Library›Triple Motion Polishing machines, designed and built by Diffraction Limited, are used to polish certain lenses. Here optician William Masionis applies a special liquid used in the process.
Digital Commonwealth — Boston Public Library
Triple Motion Polishing machines, designed and built by Diffraction Limited, are used to polish certain lenses. Here optician William Masionis applies a special liquid used in the process.
[ca. June 1962]
CC0 — Public Domain
Digital Commonwealth — Boston Public Library
[Information from item housing] Lenses
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