MIL-PRF-1/1738D
FIGURE 1. Outline drawing of electron tube type 8939 - Continued.
NOTES - Continued:
24.
This identifies a north seeking pole. This may be tested by observing which compass needle points to the geographic south.
The same compass needle will point toward the tube's north seeking pole when it is brought near the input stem of the tube.
Care should be taken to insure that the tube field does not reverse the polarity of the compass.
25.
This diameter identifies clearance area for mating shaft.
FIGURE 1. Outline drawing of electron tube type 8939 - Continued.
NOTES
Referenced documents. In addition to MIL-PRF-1, this specification sheet sheet references MIL-STD-1311, MIL-DTL-3922/59, and A-A-
55549.
Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the
previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any
inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire
content irrespective of the marginal notations and relationship to the previous issue.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
DLA - CC
(Project 5960-3752)
Review activities:
Army - AR
Navy - AS, MC, OS
Air Force - 99
NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and
responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at
www.dodssp.daps.mil.
10
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