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