![]() Also typical of cheap DMMs, although I haven't seen them that small yet 10 ohm resistor Comparing with a Fluke 179 7k5 ohm resistor Comparing with a Fluke 179 Voltage test (12V sealed battery) Ampères test (12V sealed battery with 10 ohm resistor across) Miliampères test (12V sealed battery with 7k5 ohm resistor across) In summary: do never put this DMM across the mains leads. Also typical narrow clearances, but the novelty is the slanted fuse. ![]() Typical board for cheap DMMs, with average soldering and the unfortunately way too narrow clearances. Putting the cover back without shorting everything will be interesting. The spring is not only loose from the PCB, but the aluminum stick is peeling. Several paper label warnings slapped to the back, probably to appease any lawyers. It says CAT II but does not have any indication of fused/unfused inputs. Typical Mastech el-cheapo DMM, but with an ON/OFF switch. ![]() Sorry for the low quality of the pictures I was testing a new portable camera (also found in the same somewhere place as the DMM). Interesting: I just saw PedroDaGr8's review of another Cen-tech precious piece of equipment. Well, I decided to take some pictures that evidenced the unfortunately but expected terrible assembly and design. I just found lost somewhere a brand-new Cen-tech 90899 DMM and decided to open it up and see if anything interesting popped up.
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