[Test-Equipment] Landmark Instruments ?

[gkrauss at stny.rr.com]

---- J Forster <jfor at quik.com> wrote: 
> I'd like people's opinions on what they think are really landmark
> instruments in the era between about 1955 and 1995, the kind of things
> that made a really big difference on a working engineer's test bench..
> 
Tek 400 series scopes were the first practical HF scopes and certainly made a huge difference in how I did my work as a '60s engineer. I also eventually got a HP851/8551 SpecAn on my bench and that cut my RF/Microwave test run times by at least an order of magnitude. I would've been a much slower worker without these two items of TE.
GeoffK