Yep. Divs.
It's not even analogue to cal it. You just:
1. turn the switch
2. stick it in the range you want to cal
3. short it.
4. press the cal button
5. apply 1/3rd scale (not even required on all ranges)
6. adjust the display to the calibration voltage if you need to.
7. press cal.
8. goto 2.
Eventually when you've done them all it'll start up with SELF TEST OK
![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif)
If it's reading low, it's basically a Y=MX+C transform where M and C are calibration variables. So someone put the wrong fucking M or C in.
When I did mine I did it with a PSU and connected the U1241 in series (current) or parallel (voltage) to it. Resistance I used some 1% resistors and frigged the display value to match the U1241's interpretation of the value. The linearity is amazingly good so was spot on when I cranked it up near FSD.
These are 100% works or doesn't work instruments.