The Record Imp 80 is the brilliant tiny cousin of the Record #74 Auto Vice.
I use my Imp frequently – they really are very useful indeed, despite their small size (the jaws are only 2 1/4” wide. If you are in the UK then you can still get them for around 20-30 quid on eBay which is astonishingly good value, as they are very well made.
Here is some info that I dug up when I got mine a couple of years ago:
In 1928 C&J Hampton ltd, who manufactured Record tools until the 1970s (when they merged with Ridgeway to become Record Ridgeway), took out a patent for the tube bender incorporated in the vice (GB310723).
The patent number is marked on the steel slide of the original models. It is likely that they stopped marking the slide after the patent expired in 1948, although the drawing in Planecraft from 1954 still shows it (perhaps because they did not get round to changing the picture).
There appears to have been at least one other model revision, where the boss on the handle is changed from round to square – similar changes were made to later versions of their bench vices in the 1960s so we can assume these are a later version. The other main difference is that the thread on the jaw screw thread is finer than the original version.
the unique feature of the vice is the pipe bender: