|Object Type:||Test Equipment|
|Object Name:||Portable Standard Voltmeter (AC)|
|Part No:||O.L. Moving Iron|
|Manufacturer:||Elliott Bros (London) Ltd|
|Year of Manufacture:||1934|
|Location:||Rack RAA07 [Main Store]|
Portable Standard Voltmeter
Type O.L. Moving Iron
This instrument is calibrated in International Volts.
It is correct at 68°F and, if properly used, its readings may be relied upon to within B.S. substandard at 50~
Resistance of 250V range: 2900 ohms.
Temp. correction: Negligible
Elliott Brothers (London) Limited,
Century Works, Lewisham, S.E.13
Date 4th July 1934
The Lewisham site of Elliott Bros (London) Ltd was established as Century Works in 1900. The factory made a range of electrical meters certainly as early as the post war years. Portable instruments are standard test instruments used in electrical and electronics work.
This Voltmeter’s moving-iron operation means the scale is non-linear with its first mark above zero being 20V, mid-scale being 150V and full-scale being 250V. The scale is marked with 5V minor and 10V major increments and has numerals at 20V, 50V, 100V, 150V, 200V & 250V.