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National Stock Number:
6540-00-350-2979
Federal Supply Class:
6540
National Item Identification Number:
003502979
Description:
CHART,VISION ACUITY TESTING
Detail:
AN ITEM FOR TESTING KEENNESS OF VISION AND REFRACTION IN ANY AREA WHERE ORDINARY LIGHTING FACILITIES ARE AVAILABLE.
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Techincal Specification:
| OVERALL LENGTH | 22.375 INCHES NOMINAL | | OVERALL WIDTH | 9.000 INCHES NOMINAL | | MATERIAL AND LOCATION | PAPER, LATEX IMPREGNATED OVERALL | | SPECIAL FEATURES | W/2 COVER CARDS AND 1 WINDOW CARD; SYMBOL E ONE SIDE,LINES OF LETTERS W/SNELLEN SCALE OTHER SIDE | | TEST DESIGNATION | NATIONAL SOCIETY FOR PREVENTION OF BLINDNESS, INC-DOUBLE-FACED CHART |
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