N Cook schrieb:

Can anyone improve on the following especially reducing, even further, the
chance of mistakingly using a meter set for current monitoring on live kit ,
thinking you are measuring voltage.

Assuming others here are like me, rarely use the current function of a
DVM/DMM.
Leave a gummy bright or contrasting sticker over the ammeter socket of the
meter. When transfering the red lead to that socket then transfer the label
to the function or on/off switch.

The ideal would be some sort of mechanical interlock but I cannot see how.

Hi,

Have a look at

www.gmc-instruments.com/english/produkte/metrahi2.htm

This DMM (obviously discontinued) and other types of that line
of GMC DMMs have a so called "Automatic Blocking System":
depending on the measuring range only the corresponding inputs
can be used - the other ones are blocked.

I don't know if Gossen Metrawatt's DMMs still have this feature.

HTH

Reinhard