I was ‘gifted’ on a few Christmas back as part of a set where the 90 degree angle wasn’t square and the metal ruler had a twist along the length. Yes, you can guess the quality.
It did come with a little, smaller than a computer mouse, mouse shaped thing with a horizontal and vertical bubble tube and a laser light.
Amazingly that actually worked and was the only part of the pile of shite tools I got that was vaguely accurate. + or – 2 mm over 4.8m.
Not sure if this helps but hey, it is STW so when did answers need to match the questions?