Tester T.M.S. No.1 MkII
 

Hello Everybody
Looking for any information on the Tester T.M.S. No.1 MkII WY2521 and its Power Supply Unit Selenium Rectifier No.2 WY2520
Tried getting onto the Royal Signals site but it is impossible, for a Luddite like myself anyways.
Does anyone have any info on these units?

TMS Unit
http://i105.photobucket.com/albums/m...MSNo1MkII1.jpg

http://i105.photobucket.com/albums/m...MSNo1MkII6.jpg

http://i105.photobucket.com/albums/m...MSNo1MkII4.jpg

PSU
http://i105.photobucket.com/albums/m...MSNo1MkII5.jpg

Geoff