volt meter markings clarification

[isurunalaka]

dear all

pls let me know if anyone knows below red circled markings' meaning.

 

[chuckey]

these markings will tell you , what sort of meter movement you have (moving iron/ moving coil. . ) , its basic sensitivity, if its AC or DC. And perhaps some other data.
Frank

 

[isurunalaka]

can anyone give me an idea about 1.5 marking at least pls?

 

[betwixt]

I don't think there is a standard for meter markings but often they have a figure for the thickness of metal panel they are calibrated for. The ring of metal formed around the mounting hole has a small effect on the reading. Perhaps this is 1.5mm.

Brian.

 

[isurunalaka]

1.5mm means?

 

[FvM]

Class 1.5 = maximum 1.5 % error of full scale reading. See https://en.wikipedia.org/wiki/Class_of_accuracy_in_electrical_measurements

 

[srizbf]

can anyone give me an idea about 1.5 marking at least pls?

1.5 is the accuracyclass of the meter.