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"10,000 legal ohms" resistance by Elliott Bros.

1881-1889

Decade resistance

Sub-standard 1000 ohm resistance

1930

Resistance by Herbert Taylor 1887

1887

100 "true ohms" manganin-wire resistance

1892-1893

Sub-standard 1 ohm resistance

1931

Resistance type 21-A

Standard 1 ohm resistance, serial no.4307, by Nalder Bros. & Co., London, N.P.L., no.46399, marked 1 True Ohm, Manganin, with Certificate of Examination

Standard 1 ohm resistance

1895

Variable resistance, cylindrical column with copper wiring wound around it. Has wooden top and base plates, with ceramic circular feet. Also has a removeable bar running along it. Manufacturer unknown.

Variable resistance