Mullard Maintenance Manual circa 1955 - 1956.
Specifically prepared by Mullard to provide service engineers with useful information to help repair and maintain radio and television receivers.
A well-worn and much used treasure trove of information that includes:
A) Valve equivalent lists.
B) Mullard valve data back to the 1920s, plus the 'new' germanium diodes.
C) Television tube equivalent lists.
D) Television tube data.
MULLARD DATA BOOK CIRCA 1955 - 1956 A.pdf