"Richard Knoppow" wrote in message
...
The 400 series meters are AC meters, they do not have
DC or resistance ranges. The 400L is the same meter as the
400D and H other than the special meter movment which
displays the voltage on a logrithmic scale and has a linear
decibel scale uppermost. It does not need any special probes
or accessories.

Richard is correct. May I add that my HP400H, the model with linear scales,
was full of black plastic encapsulated paper capacitors (sometimes called
bumblebees or black beauties). These capacitors are well known for their
failure rates. There may be a reason you got a good price on your meter.

--Chuck N7RHU