Got a historical question which I was hoping the UKC hive mind could help answer. The sticht plate was patented in 1970 in Germany, but when was it first used in the UK? I first saw one as a child at an outdoor centre around 1983 or so, but I'm sure they must have been in use earlier than this. So, who used one back in the day, and when from? If you didn't use one, what did people use instead, the waist belay, or something else?
Cheers!