Power unit type 234A. Serial no. 2991
Cossor power unit, type 3240A, 0-3kV
Power unit for micro-electrode puller
Aft power unit 15" rack travel
1949-1954
Power unit for the exchange meter
1960-1970
E type After Power unit no.266
Power unit
Gyro Angling Power Unit
1938-1946
"Westminster" 1-0-1 volt 8 amp a.c./d.c. power unit
1980
Four-cylinder horizontally opposed air cooled 960 c.c. auxiliary power unit
1947-1949
Power unit for 'Fialka' Cipher machine (10 rotor) with Cyrillic (Russian) characters
after 1958