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