BS 4191:1976
Superseded
View Superseded by
Specification for microform readers
Hardcopy , PDF
English
06-30-1976
01-15-1994
Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Definitions
4. Essential characteristics
5. Additional characteristics
6. Marking and testing
Appendices
A. Desirable characteristics
B. Determination of temperature rise of film
C. Method of determining resolution
D. Method of measuring magnification
e. Test film
Figures
1. Minimum resolution values
2. Positions for measuring resolution on screen
3. Test chart
Requirements for rear-projection readers for microfiche and microfilm in roll form, film strips, aperture cards and jackets. Methods for determining resolution and measuring magnification.
| Committee |
IDT/1
|
| DevelopmentNote |
REPLACES BS 1371: 1956
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
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