[Test-Equipment] Reference info

[Roland Burgan]

In case this site has not been mentioned before, I'll pass this along 
for reference information. This site has a wealth of info about various 
subjects, of special note here is the wealth of military manuals 
available for various electronic equipment, for instance, here is the 
page for the Tektronix 475 (plus DM44 options):
http://www.tpub.com/content/oscilloscopes/TM-11-6625-2735-24P-1/

The main content listing is:
http://www.tpub.com/content/

Best, Roland Burgan