In the method for the marking of the measurement points (31) - most advantageously at least of the socket outlets, earthing points and lighting points - in the electrical network of a building or property : - an identifier (10), which contains information on each measurement point (31), is established automatically on the basis of the electrical network information included in a switchboard; - the identifier (10) of each measurement point (31) is printed onto a marking device (12); and - the marking device (12) is fastened to the measurement point (31) or to its immediate vicinity. Also includes a device claim and system claim as well as parallel method claims.