Wire rheostat, 50 ohm 6 amp by Robert W. Paul
1900-1919
Rheostat, Kelvin Pattern
1888
Campbell's constant inductive rheostat
1926-1930
Rheostat
Rheostat by Harvey & Peak
1883-1909
Rheostat labelled as:- "No.3 rheostat given by Faraday to Sir C. Wheatstone"
40 K carbon rheostat with skirted knob
Early filament rheostat, by F.L. Mitchell & Co.
Jervis square pattern rheostat
Wire wound rheostat using two grades of wire
Igranic Pacent 10 ohm 1 Amp. rheostat with carton
Carbon cloth rheostat
Rheostat, G.P.O., 956
Lissen wire-wound rheostat c.1927
1927
Rheostat with ten turns of thick wire
Rheostat by R.W. Paul
1893-1901
Constant inductance rheostat
Wheatstone No. 1 original rheostat, 1843
1843
Rheostat, by Newton & Co., 3, Fleet St., London
Varley carbon cloth rheostat
Wire wound rheostat with vernier device
Carbon plate rheostat
Plante's rheostat
Rheostat for arc lamp
Rheostat for Arc Lamp
Kelvin type rheostat in glass fronted wooden case
Carbon plate rheostat by R.W. Paul, London
1893-1920
Wheatstone type rheostat, c.1880-1890
1880-1890
Rheostat by Birch
1950-1980
Varley's carbonised cloth rheostat by Townson & Mercer
1890-1939