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Standard resistance box

Standard resistance box

1970-1979
Standard resistance, 100 ohms, by Griffin, London

Standard resistance, 100 ohms, by Griffin, London

1900-1974
Standard resistance

Standard resistance

1890-1895
Standard resistance type 9930

Standard resistance type 9930

1960-1980
Standard resistance type 9930

Standard resistance type 9930

1960-1980
Standard resistance type 9930

Standard resistance type 9930

1960-1980
Tapped standard resistance, 20 ohms & 160 ohms

Tapped standard resistance, 20 ohms & 160 ohms

Three standard resistances by Guildline, Canada, 1960-80 (see 3 stroke numbers).

Three standard resistances by Guildline

1960-1980
Crompton Standard Resistance No.510-C1900.

Crompton Standard Resistance No.510-C1900

Standard resistance type D-558-C, 2 Megohm +- 0.5%, by Muirhead and Co. Ltd., Beckenham, Kent, no.179031

Standard resistance type D-558-C

1950
Standard resistance, oil-filled type, 0.1 ohm 5 amp, by Gambrell, Croydon, no.12222/264

Standard resistance

1960-1980
Drysdale-Tinsley non-inductive standard resistance, 10 ohm 1.5 amp, serial no.2564, by H. Tinsley and Co., London, S.E.

Drysdale-Tinsley non-inductive standard resistance

1915
Standard resistance, oil-filled type, 10 ohm 0.1 amp, by Gambrell, Croydon, no.12224/262

Standard resistance

1960-1980
Standard resistance, oil-filled type, 1 ohm 3 amp, by Gambrell, Croydon, no.12223/257

Standard resistance

1960-1980
Crompton Standard Resistance No.61/2-C1900.

Crompton Standard Resistance No.61/2-C1900

Three standard resistances, each 100 amp 0.02 ohm, in wooden cases and mounted on wooden trolley

Three standard resistances

1929
Tapped standard manganin-wire resistance (500,500 "true ohms") by Elliott Bros., No.300

Tapped standard manganin-wire resistance

1892-1893
Standard resistance type RS1 serial no.12378, 10000 ohm 0.03 amp, by the Croydon Precision Instrument Co. Ltd.

Standard resistance type RS1 serial no.12378

1960
Three standard resistances, oil-filled, by Gambrell, Croydon, 1960-80, (see 3 stroke numbers).

Three standard resistances

1960-1980