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

Standard resistance

1960-1980
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
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

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

Tapped standard manganin-wire resistance

1892-1893
Three standard resistances, each 100 amp 0.02 ohm, in wooden cases and mounted on wooden trolley

Three standard resistances

1929
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