I would worry with something you don't know how it works internally about just connecting it directly to the meter. There are fuses in the meter to protect it (safety) that you "could" blow out and these are not standard, find them at Home Depot, type fuses. You'd most likely have to order them online. I'd say to start with the 10 AMP scale and see about how much you get and then look at the specs of your meter to see what the maximum current the mA scale can tolerate is and if its too high, DO NOT DO IT!
Just so its said, 1 amp is 1000ma so as an example, 200ma would register as 0.200 amps on the 10 amp scale.
That meter looks to be what we call "autoranging" (I think) as there's just a setting for current (milliamps, amps). IT will automagically (wink) determine the correct scaling to display the result correctly but what it won't do is protect itself if you over-current the range, which is easier to do than you'd think with the mA scale (its a much smaller, easier to blow out fuse) so be careful at the least.
Do "friends" a favor. Don't give them that thing. Build them an LM317LZ 3 component current limiter hooked to a wall wart that puts out enough current so they can do it properly.