Possibly not an anachronism, but almost certainly inappropriate....
Did anyone watch the recent "Midsomer Murders" episode where lots of people are UFO-watching? One chap and his son have their caravan parked in a wood and have numerous bits and bobs of paraphernalia set up to detect "alien craft". Some of the items are radar-related, supposedly. The fact that the "ping" on a radar screen moves as it fades is a bit odd, but a home-made radar operating from a caravan? Is this feasible
?
When the outside of the caravan is seen, there is a "boat anchor" of some description just to the left of the door of the caravan. Anyone any ideas as to what it is?
Colin.