This Tektronix 1705A L-band spectrum analyzer has temporarily borrowed a garment from an old waveform monitor.
Because as I had it on my bench powered up naked after running through a calibration on the CRT power supply, an operator comes walking in and rests his arm riiiiight here. Luckily I got him to move before any BANG occurred.
How do you even guard against awful human error like this?!
Now if you’ll excuse me— I need to make a sign for him. 😉
Bonus: The resistor the other tech never bothered to replace. Amazingly it still works, but I wasn’t gonna leave it like this!