This Voltage Reference is useful where an exact voltage is required as a reference during an experiment. It is useful also as a reference voltage in circuits and bridge circuits involving the measurement of resistance. It is battery operated and provides two reference voltages at 10.00V and 1.00V. It replaces the old ‘Weston Standard Cell’ for most applications. The IEC Voltage Reference is a new and advanced alternative to the traditional 'Weston Standard Cell'. It incorporates 2x 9V #216 transistor batteries and offers precise 1.00V and 10.00V outputs that are ideal for calibrating various instruments, including meters, multimeters, and oscilloscopes. Read Instruction Sheet Product Code: SE.EM4230-001 Dimensions: 115mm (L) x 82mm (W) x 30mm (H) Voltage Reference: 10V +/- 0.02V 1V +/- 0.002V Accuracy: +/0.2% Weight: 0.17 kg