I did have a look at this out of curiosity, and unfortunately Medical electronics was removed from the list a couple of years ago.
3113 actually states it's not a graduate post and 3218 if you follow
this is actually the dental technician who takes x-rays not the tech who services the equipment.
When the UK border agency actually had the points calculator I did try it and if I wasn't born in the UK, now even with a engineering degree I wouldn't get in!