I just got a Ultrics FBA-0021-YB multimeter and tried to measure some currents. This multimeter has 2 modes of measuring current, one is by connecting the red lead to the 10ADC (10A max) slot, and another by connecting the red lead to the VΩmA (200mA max) slot.
The first method works perfectly but has less digits of precidion so I wanted to use the second method. I tried measuring the current through a LED strip, then a small DC motor, and also a LED backlight. The first method worked always, but with the second would simply almost all of the times not work at all, and give "0.00" with the selector on 10A or "1" on 200ma, 20ma and 2ma.
I read through the manual - it doesn't specify anything in particular about this.