CIMCO 11 1411 Notice D'emploi page 31

Measurement category III for measurements in building installations (e.g. power out-
lets and sub-distribution units). This category also includes all lower categories (e.g.
CAT III CAT II for measuring electrical devices). Measuring in CAT III is only permitted with
test prods with a maximum free contact length of 4 mm or with cover caps over the
test prods.
Earth potential
Symbol for the capacitance measuring range
Polarity markings (positive and negative) for direct current measurement. The
symbols show the direction of the current flow to ensure the correct polarity when
measuring.
Position marker for the conductor to ensure the correct current measurement.
31