Electrical measuring instruments laboratory and portable analog

Multi-scale portable measuring instruments. General technical specifications

Voltage detectors. General specifications

System of product-quality indices. Analogue pertable laboratory electrical measuring instruments. Nomenclature of indices

State system for ensuring the uniformity of measurements. Electronic analogue pulse voltmeters. Methods and means for verification

Phase-angle and power-factor meters

Direct acting indicating analogue electrical measuring instruments and their accessories. Part 5. Special requirements for phase meters, power factor meters and synchroscopes

Light-beam oscillographs