Lord Kelvin's magnetic deflector
1901
Kelvin astatic mirror galvanometer
1901-1913
Kelvin astatic wattmeter
1901-1913
Kelvin-White portable volt and amperemeter
1906
Pattern no.182. liquid Boat's compass fitted with Captain Chetwynd's patent improvement
Electrodynamometer wattmeter no.217
Lord Kelvin's paralleling voltmeter
Kelvin-White electrostatic voltmeter
1901-1907
Kelvin portable electrometer No.91
Chetwynd liquid compass
1905-1912
Testing set no.321 in wooden case
Kelvin and White generator
Kelvin compass deflector by Kelvin and James White Ltd.
Multi-cell voltmeter
1900-1920