​This course describes the principles of analog electrical instruments and errors in measurements. The course classifies the electrical instruments and their functions based on the instrument’s structure: d’Arsonval meter movement, moving iron movement, electrodynamometer movement, and induction. The course covers a wide range of electrical instruments: ammeters, voltmeters, ohmmeters, multi– meters, watt–hour meter, Wheatstone and Kelvin Bridges, and the megger. The course includes laboratory experimental setup to explore the different types of errors in measurements, loading effects of meters, and the measurements of electrical units in AC/DC circuits