OPERATING
AND SERVICE
MANUAL
-hp- Part No. 00427-90004
MODEL
427A
VOLTMETER
Serials Prefixed:
947-
Appendix C, Manual Backdating Changes,
С
%
adapts manual to serials prefixed 550-, 621-, 731-
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Copyright Hewlett-Packard Company 1969
P.O. Box 301, Loveland, Colorado, 80537 U.S.A.
Printed:
JAN 1970