Evershed portable testing set
Avodaptor for use with Avo meter to test radio equipment
Electrostatic voltmeter, disassembled to show parts
Crompton potentiometer
potentiometer no.1012 - 1920
ammeter, displayed without casing (NOT PRESENT) from display panel on "Pivotless instruments"
portable voltmeter no.94282 - 1918, 0-600v.
G.P.O. moving coil milliameter and voltmeter
potentiometer no.114 - 1890
