Warranty VOID if NOT Removed T-Shirt:
http://teespring.com/warrantyvoid2
What's inside a 1975 vintage Tektronix 213 portable oscilloscope/DMM combo?
Forum: http://www.eevblog.com/forum/blog/eevblog-628-tektronix-213-vintage-portable-oscilloscope-teardown/
High res teardown photos here: http://www.eevblog.com/2014/06/11/eevblog-628-tektronix-213-vintage-portable-oscilloscope-teardown/
Specs: http://www.teknetelectronics.com/DataSheet/TEKTRONIX/TEKTR_21325410.pdf
Brochure: http://www.testequipmentconnection.com/specs/Tektronix_213.PDF
Datasheets:
Trigger Chip: http://w140.com/155-0048-01.pdf
Decade Counter: http://www.datasheetarchive.com/dlmain/Databooks-2/Book271-73.pdf
EEVblog Main Web Site:
http://www.eevblog.com
EEVblog Amazon Store:
http://astore.amazon.com/eevblogstore-20
Donations:
http://www.eevblog.com/donations/
Projects:
http://www.eevblog.com/projects/
Electronics Info Wiki:
http://www.eevblog.com/wiki/