Sullivan Griffiths inductance (second grade)
1943
Sullivan Griffiths inductance (second grade)
1943
Sullivan-Griffiths inductance (second grade) by H.W. Sullivan Ltd.
1962
adjustable self-inductance
1905
H W Sullivan inductance (second grade)
Sullivan Griffiths inductance (second grade)
1943
Sullivan Griffiths inductance (second grade)
1943
Sullivan Griffiths inductance (second grade)
1943
Sullivan Griffiths inductance (second grade)
1943
Sullivan Griffiths inductance (second grade)
1943
Sullivan Griffiths inductance (second grade)
1937
Sullivan Griffiths inductance (second grade)
1939
Variable mutual inductance No. 17552 by H. Tinsley and Co.
1925-1935
Air-cored inductance
1980