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Muirhead Clark standard cell

1888

Bank of seven Weston standard cells

1893-1901

Standard cell, model 4, serial no.3653

1900

Carhart Clark standard cell by Nalder Bros. & Co.

1902

Weston standard cell (cadmium cell) marked ICST R.C.S. Phys. Lab. 1383

Weston standard cell

1900-1949

Weston standard cell type D-402-A serial no.154508, by Muirhead and Co. Ltd.

Weston standard cell type D-402-A serial no.154508

1950

Carhart standard cell; model no 4296. Brass cylinder with base plate, four terminals on top with thermometer. Manufactured by Nalder Brothers and Company

Carhart standard cell; model no 4296. Brass cylinder with base plate

Phase II standard cell Weston type 1149, made by H. Tinsley & Co., London (UK), circa 1935. no 109157. Marked in black paint "54 EE 1331B". Part of the equipment used by the Metrology Department at UMIST.

Standard cell Weston type 1149

Early standard cell no. 13,369, made by Muirhead & Co., Westminster (UK). Marked in white paint "S.282". Part of the equipment used by the Metrology Department at UMIST.

Early standard cell no. 13

Weston standard cell type D-550-A, serial no.310439, by Muirhead

Weston standard cell type D-550-A

1960

Weston standard cell marked ICST R.C.S. Phys. Lab. A.

Weston standard cell

1900-1949

Weston standard cell (cadmium cell) serial no. 11490 by Griffin & Tatlock Limited, London

Weston standard cell (cadmium cell) serial no. 11490 by Griffin & Tatlock Limited

1926-1954