I’ve just a new multimeter to replace a cheap and cheerful one that I’ve had for years. This is a fairly basic model, Kewtech 111, so no current measurement, but it has what I need, AC and DC measurement and resistance/continuity. I had the idea of testing all my sockets. I have a cheap socket tester which shows up any miswiring, but in addition I thought I’d check the earth continuity. So, to my mind, if I put one probe of the Kewtech on the earth terminal of the socket, and the other on a nearby light switch mounting screw, I’d be measuring the resistance of the circuit from the socket to the CU and then back via the lighting circuit to the light switch. I’ve tested all the sockets on the top floor of my 3 storey house, and the readings I’m getting are from 1 to 3 ohms, which I believe is acceptable. My question is - is this a viable and meaningful way of doing this or have I missed something and I’ve been wasting my time? My other idea was to run a wire (extension lead) to the earth terminal at the CU and thence to the tester and the socket, subtracting the resistance of the cable from the overall reading.