Tracked Changes. Ophthalmic optics. Mounted spectacle lenses
BS EN ISO 21987:2017 - TC
Tracked Changes. Ophthalmic optics. Mounted spectacle lenses
This is a Tracked Changes version
Tracked Changes is a version of a standard that indicates a change has been made, during the standards revision process, between the active standard and its previous version. Additions, deletions, and other formatting and/or content revisions are clearly displayed as underlined and strike through texts, ensuring all changes made between the two documents are quickly and easily identified
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ISBN: 9780539084733
Keywords:
Tolerances (measurement), Surface treatment, Visual inspection (testing), Prisms (optical), Circular shape, Spectacle lenses, Ophthalmic equipment, Bevelled, Dimensional tolerances, Focal length, Spectacles (eyeglasses), Marking, Ophthalmology, Fitting, Optical measurement, Optics, Angular tolerances, Lenses, Tolerances of position, Optical phenomena, PDF
| Publication Date | 25 Feb 2020 |
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| Product SKU | 30412296 |
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| ISBN | 9780539084733 |
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| BSI Code | BS EN ISO 21987:2017 - TC |
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| No. of pages | 70 |
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| Category | Tracked |
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| Publisher | British Standards Institution |
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