Her is a couple of my test equipment boot up times.
Tektronix 465 (~4 seconds to display 1 or 2 seconds after full brightness)
Canadian SG-1 Signal Generator (cold boot vacuum tube you see ~12 seconds)
Canadian SG-1 Signal Generator (warm boot vacuum tube you see ~7 seconds)
Eico 950b capacitor tester (warm boot vacuum tube you see ~3 seconds (magic eye tube not warmed up yet but there is the correct voltage)
Dim bulb tester (40W light bulb less then 0.3 seconds, I turn on power at 1 second in to the video)
60W
75W
I don't know if it counts or not but hey it is used to test and limit the current into a circuit with a fault so I think it should count.
Atwater Kent homemade power supply (90V rail unloaded 170V ~8 seconds due to cap charge (current limited)
Atwater Kent homemade power supply (6V rail unloaded 8V ~2 seconds due to cap charge (NOT current limited!)
Mastercraft 52-0052-2 multimeter (measuring Ni-Mh battery 1.366V ~1.5 to 2 seconds)
All of the tests including and after the dim bulb tester I turn on the equipment after 1 second according to the camera timer (Camera Nintendo 3DS 20FPS 480x240 resolution).
The HP logic analyzer was shot in night mode so it was only 5FPS Sorry