Old Vintage Analogue Meters 

Although I've had quite a few of those older soft iron meters apart for repair in the marine industrial environment (many years past), the penny only dropped watching this and realising how the damper was mimicking a clock regulator mechanism. I've never had a thermal biasing meter apart, although I may have unknowingly have looked at many, very interesting. I'd love to see you do a breakdown of a three phase synchro meter, as I never entirely trusted them from bad experiences and always relied on phase lamps when working with manual synchro. Nice compilation, thank you.

👍Thanks for video. Nice that you reassembled after tear down. The scale on the big moving iron Ammeter looked unusual. Obviously non-linear. I am more used to Micro and Milliammeters. Interesting to see more heavy duty instruments - perhaps easier to see how they are constructed.

Fascinating stuff. On the bi-metallic meter, did the "30M" refer to a 30 minute lag? It seems if you're drawing hundreds of amps for such a long period you must be doing some pretty heavy stuff...

Please don't conflate damp with dampen! It's a bad habit I frequently see with US channels; dampen means to make something wet, whereas damp means to slow something down or limit its motion.