IEC 61010-2-033:2012 specifies safety requirements for METERS. The METERS that have a primary purpose of measuring voltage on a live MAINS CIRCUIT are within the scope of this standard. They have various names, but all of them have capability for measurements of voltages on a live MAINS CIRCUIT. Some of the names given to this equipment are as follows: - MULTIMETER; - digital MULTIMETER; - VOLTMETER; - clamp METER (see also Part 2-032). For the purpose of this standard, the term METER is used for these HAND-HELD measuring instruments. This publication is to be read in conjunction with IEC 61010-1:2010.