![](https://coimages.sciencemuseumgroup.org.uk/454/369/large_thumbnail_smg00065572.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/454/369/large_thumbnail_smg00065572.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/386/662/large_thumbnail_1966_0240_0002__0002_.jpg)
Power unit type 234A. Serial no. 2991
![](https://coimages.sciencemuseumgroup.org.uk/492/897/large_thumbnail_smg00181124.jpg)
Cossor power unit, type 3240A, 0-3kV
![](https://coimages.sciencemuseumgroup.org.uk/32/35/large_thumbnail_1954_0670__0001_.jpg)
Aft power unit 15" rack travel
1949-1954
![](https://coimages.sciencemuseumgroup.org.uk/510/214/large_thumbnail_smg00291468.jpg)
Power unit for micro-electrode puller
"Westminster" 1-0-1 volt 8 amp a.c./d.c. power unit
1980
Power unit
Power unit for the exchange meter
1960-1970
Four-cylinder horizontally opposed air cooled 960 c.c. auxiliary power unit
1947-1949
Gyro Angling Power Unit
1938-1946
E type After Power unit no.266
Power Unit Cabinet
Power unit
Power unit for 'Fialka' Cipher machine (10 rotor) with Cyrillic (Russian) characters
after 1958