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Used Dario grad-o-meter D400

Does anyone know where I can find a used Dario grad-o-meter D400 (for inches). I found them brand new online but are too expensive.

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I just bought a used dario gradometer and it's by inches. 8056845136 I will sell it to you.

Posted on Nov 06, 2010

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Is this an Auto-ranging multimeter or does it have several range settings such as 2V, 20V, 200V, 750V, etc.?

If it is an auto-ranging, you will have 2 voltage selections: AC (alternating current) which will have a sine wave similar to this: ~, or DC (direct current) which will have a symbol similar to this: =. AC is mainly used to measure the voltage in your home or voltage to appliances, either 110V/120V or 220V/240V. DC is used to measure voltages such as in electronic assemblies, computers, etc.

You need to know whether you are measuring AC or DC to get an accurate reading. You also need to make sure you have the meter on a high enough range if it is not an auto-ranging meter. The best thing to do is start on a high range and work down, although most meters have an overload protection.

To measure current you must "open the circuit" and place the meter leads in the circuit. This should only be done if you are very familiar using the meter. Current is measured in Amps (A), milliamps (mA), or microamps (uA). There is little use for the common person to measure current.

Not sure what you are going to use it for. Computer power supply, perhaps?

There are some tutorials on youtube that may be beneficial. Here's one:

Here is another:

You can do a search once there for others. Just insert "multimeter" in the Search box.

Not sure if I have answered your request sufficiently, but if you have more questions, just use the Comment button.

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Dario Grade O Meter Instruction manual needed

Hi Tracy,

I have the book, the address in the book is Dario Grad-O-Meter 12660 Lull St. North Hollywood, CA 91605 ph (818) 765-3635

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