MIL-HDBK-162A
Volume 1
15 December 1965
Section 3
DATE: 1 July 1964
ITEM NAME: INDICATOR GROUP
COGNIZANT SERVICE: USN
TYPE: AN/SPA-31(XN-1)
FEDERAL STOCK NUMBER:
USA
USN
USAF
USMC
STATUS OR TYPE CLASSIFICATION
Mfg(s) Name or Code 'Number: Hughes Aircraft Company
between a reference point and a target, and the vertical
FUNCTIONAL DESCRIPTION
distance between a reference point and a target.
The Indicator Group AN/SPA-31(XN-1) is designed
as a range and height indicator, which presents visually
the scalar distance
AN/SPA-31(XN-1): 1
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