A graduated scale, usually cylindrical in shape, attached to, or forming a part of, the focusing nut or knob of the eyepiece of an optical instrument. It is read in conjunction with a line or dart indicator to measure the change in refracting power of the eyepiece, in diopters, and introduces correction to compensate for the eyesight variation of the observer. It may have a knurled periphery and/or teeth on the inside diameter.
NSN: 1240-01-209-1741
What are the manufacturers of nsn 1240012091741?
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Does this nsn 1240012091741 have a shelf life? No. This NSN does not have an applicable shelf life. |
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What is the formal definition of nsn 1240012091741 A graduated scale, usually cylindrical in shape, attached to, or forming a part of, the focusing nut or knob of the eyepiece of an optical instrument. it is read in conjunction with a line or dart indicator to measure the change in refracting power of the eyepiece, in diopters, and introduces correction to compensate for the eyesight variation of the observer. it may have a knurled periphery and/or teeth on the inside diameter. |
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Does nsn 1240012091741 contain any precious metals? No precious metal content. |
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Does nsn 1240012091741 contain any hazardous materials? No MSDS. No hazardous material. |
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What is the ESD classification of nsn 1240012091741? No known electrostatic discharge. |
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