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BS 4274-1:1968 | 26 Jan 1968 | BSI Knowledge
Standard
Withdrawn
BS 4274-1:1968
Visual acuity test types - Specification for test charts for clinically determining distance visual acuity
Published:
26 Jan 1968
•
Withdrawn:
13 Jan 2003
Overview
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References
History
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Product Details
Descriptors
Letters (symbols)
Ophthalmic equipment
Dimensional tolerances
Size
Luminance
Spaced
Lighting levels
Lighting systems
Ophthalmic test equipment
Illuminance
Contrast (optical)
Test charts (ophthalmic)
ICS Codes
11.040.70 Ophthalmic equipment
Committee
CH/172
International relationships
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ISBN
0 580 00039 7
Publisher
BSI