151 - Inside a Lionmount CD3 Capacitor Box (including repair) 

While on the lookout for low tolerance reference capacitors, I came across this vintage capacitor decade box CD3 from Lionmount from eBay. Its lowest decade from 10nF to 100nF in steps of 10nF has a tolerance of 1% which is not too bad. The higher decades are a bit worse at 2% but still..
It turns out that decade box needed a bit of repair and definitely a clean-up but I am quite happy with this find.
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0:00 Outside
0:50 First test
1:36 Opening
2:04 Repair
3:51 Fixed
4:08 How it works
6:34 Accuracy

Наука