US6046583A
(en )
2000-04-04
Miniature crossed coil gauge having an active flux ring
GB1410301A
(en )
1975-10-15
Electro-magnetic thickness gauge
US2315408A
(en )
1943-03-30
Magnetic suspension
US3143704A
(en )
1964-08-04
Induction meter having magneticallysupported rotor
US2346529A
(en )
1944-04-11
Photometer
US2110680A
(en )
1938-03-08
Electrical instrument
US2389393A
(en )
1945-11-20
Electrical measuring instrument
GB588178A
(en )
1947-05-15
Improvements in or connected with electro-magnetic pick-up devices for use with stringed musical instruments
US2333991A
(en )
1943-11-09
Electrical measuring instrument
US3005951A
(en )
1961-10-24
Wide scale electrical measuring instrument
US2889520A
(en )
1959-06-02
Moving magnet meter movement
US2871449A
(en )
1959-01-27
Magnetic restoring force suspension galvanometer
US2539618A
(en )
1951-01-30
Vibration responsive apparatus
SU1624377A1
(ru )
1991-01-30
Устройство дл измерени индукции магнитного пол
US1745817A
(en )
1930-02-04
Oscillograph
US4211972A
(en )
1980-07-08
Self contained filar suspended meter rotor
US2869075A
(en )
1959-01-13
Magnet calibrating stabilizer
US2167083A
(en )
1939-07-25
Electric meter
Jagadeesh Kumar
2025
Analog Indicating Instruments
US444803A
(en )
1891-01-13
Potential-indicator
GB191214378A
(en )
1913-06-05
Improvements in and relating to Electric Measuring Instruments.
GB607760A
(en )
1948-09-03
Improvements in or relating to devices for magnetically determining the thickness of non-magnetic or poorly magnetic material
GB951458A
(enExample )
GB994365A
(enExample )
GB769796A
(enExample )