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Date
Sub-standard 1 ohm resistance

Sub-standard 1 ohm resistance

1931
Sub-standard 1000 ohm resistance

Sub-standard 1000 ohm resistance

1930
100 "true ohms" manganin-wire resistance

100 "true ohms" manganin-wire resistance

1892-1893
Decade resistance

Decade resistance

Resistance by Herbert Taylor 1887

Resistance by Herbert Taylor 1887

1887
"10,000 legal ohms" resistance by Elliott Bros.

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

1881-1889
Standard 1 ohm resistance

Standard 1 ohm resistance

1895
Resistance type 21-A

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
Resistance for Kelvin balance no.642

Resistance for Kelvin balance no.642

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