when i use my digital multimeter and set it on ohms, check between two points, it will read either ohms or milli-ohms. which reading has the least resistance. i generally use my ohm-meter for continuity checking and was curious the difference between the two readings.
Low resistance circuits should be measured with a milli-ohmmetr.
A "decent" connection should have a resistance of less than ±0.1 ohms (or 100 milli-ohms).
The operation of an Ohm-Meter is based on the standard technique:
Pass a known fixed current through the known resistance, and measure the potential
drop across it.
Gord May "If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
I was using an auto ranging meter to check the lighting connectors and wiring on my boat. I continued to be confused as to whether I had a good connection or not, until I got a piezo buzzer and some alligator clips at radio shack. I had a good connection when I could hear a beep, connecting one side to the battery the other to the connector. Now as Gordy may say even a beep in this system doesn't indicate a good high current connection.
Location: Cooktown,Australia.(only to collect my mail)
Boat: Fastback 32 cat.
Re: ohm reading
I think twistedtree is correct , the average multimrter that I have seen doesn't usually have a milliohm scale , it will read .x of an ohm which can be calculated in miliohms but unless it is a quality meter it won't be very accurate on low ohms. M ohms is usually meg ohms [ high resistance ] most multimeters read megohms . Hold the probes one in each hand and you will get a reading through your body that will be megohms , don't do this with a insulation tester aka megger or you will get a 500 [or more ] volt dc shock. What is the brand and model of your meter ?