I bought this popular, inexpensive ESR meter, the MESR100, from Amazon, with the goal of evaluating it as the subject of a YouTube documentary.
But as this video shows, I was not impressed by its value and performance, and thought that it was something of an unreliable dud. I have no idea if mine was defective or not, or if it is just a poor design. Anyway, if you are in the market for an ESR meter, I think you can do better than this model for about the same price. Compare this product's performance and capabilities with the EZM Electronics Studio's "ESR2501C" in my video about that product. It easily outperformed THIS meter, and also has a useful DCR measuring feature. It's ESR readings were consistently in line with the ESR reading obtained form my EXTECH LCR200 meter, and THAT product can only barely test DCR of capacitors. I have returned this product to Amazon.