National Item Identification Number

00-490-2052
004902052
6650-00-490-2052
6650004902052

National Stock Number

Item Name

IRIS DIAPHRAGM,OPTICAL INSTRUMENT

Federal Supply Class

6650

Description

An adjustable item of thin, overlapping opaque plates which are actuated by a ring or other device so as to change the diameter of a central opening, for controlling the intensity of transmitted illumination. It is usually employed to regulate the aperture of a lens in microscopes, and other optical instruments.

Commercial and Government Entity Code (Supplier Data)

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82577

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Reference Numbers (Part Numbers)

3204731

Required Categories

MATERIAL
OVERALL WIDTH

Required Description

COPPER
1.625 INCHES NOMINAL