6810-00-764-2248 SODIUM PHOSPHATE,TRIBASIC Index 6540-00-764-2257 LENS,OPHTHALMIC,SPHERE

National Stock Number:
6540-00-764-2256

Federal Supply Class:
6540

National Item Identification Number:
007642256

Description:
LENS,OPHTHALMIC,SPHERE

Detail:
A TRANSPARENT OPTICAL ELEMENT HAVING EQUAL SPHERICAL DIOPTER CURVATURES USED TO CORRECT HYPEROPIC (FARSIGHTEDNESS) OR MYOPIC (NEARSIGHTEDNESS) CONDITIONS OF THE EYE.


Manufacturer Information:
MILL16991A81349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
BASE CURVE DIOPTER0.81 PLUS MINIMUM AND 0.93 PLUS MAXIMUM
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND E CLASS AND 52 SIZE
DIAMETER52.0 MILLIMETERS MINIMUM AND 56.0 MILLIMETERS MAXIMUM
CROSS-SECTIONAL SHAPE STYLESPHERE
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY SIZE
STYLE DESIGNATORROUND
MATERIAL AND LOCATIONGLASS OVERALL
CROSS CURVE DIOPTER0.81 PLUS MINIMUM AND 0.93 PLUS MAXIMUM
SPECIAL PACKAGINGPR OF IDENTICAL LENSES
LIGHT TRANSMISSIONUNTINTED


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