Features
grade b type 517-645 jan-g-174 optical glass material.
Includes quality control certificate of conformance.
Specifications
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Diameter:
3.100 inches
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End Application:
Night vision sight an/pvs-2
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Axial Thickness:
Between 0.131 inches and 0.135 inches
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Single Lens Style:
Meniscus
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Material:
Glass, optical, jan-g-174, type 517-645, grade b
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Special Test Features:
Optical drawing requirements iaw mil-sts-34; optical terms iaw mil-std-1241; coat iaw mil-m-13508; element iaw mil-o-13830; interpret drawing iaw mil-d-1000
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Supplementary Features:
Edges of item are to be covered with edge blackening sc-b-614594; edge blackening to be followed by one coat of yellow edge marking sc-b-649066
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Fsc Application Data:
Night vision equip. Emitted and reflected radiation
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Federal Supply Class (fsc):
Night vision equipment, emitted and reflected radiation
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National Stock Number (nsn):
5855-00-087-1540