Caption
Schematic diagrams of various electrical measuring device devices and circuits. Various types of measuring instruments and their functional principles as well as two simple circuit examples for current and voltage measurements are shown, principle of a moving-iron measuring instrument, principle of a moving-coil measuring instrument, circuit with an ammeter (Amp.) and a voltmeter (Volt), illustration, reproduction of a 19th century model. Authentic, file restored for optimal use, exact date of original unknown, historical
Date
Jan 27, 2026
Credit line
Photo12/imageBROKER/Sunny Celeste
Reference
BRK26B84_229
Model release
No
Property release
No
License type
Royalty free
Available size
402.6Mb (18.3Mb) / 46.4in x 33.7in / 13920 x 10109 (300dpi)