Weston Normal Cell By Cambridge Instrument Company

This is a portable Vintage Weston Normal Cell By Cambridge Instrument Company, which would have been used as a laboratory standard for voltage. They typically stabilised at around 1.018638 Volts. No current was normally drawn from the cell.

This type of cell was made between 1924-1967 and are no longer in use. We are selling this as a scientific curio/display item only but it is working with a measured output of 1.018 volts at 20ºC.  

The cell consists of a brass cylinder with 2 connections at top marked ‘+’ and ‘-’.  It is labelled:

Invented by Edward Weston in 1893, it was adopted as the International Standard for EMF from 1911 until superseded by the Josephson voltage standard in 1990.

Approximate Dimensions

Diameter: 9cm
Max Height: 14.5cm

This beautiful scientific instrument is a must-have for collectors of vintage electronic/physics/science equipment as a display item in an office, University, or man-cave.

NB: The photos have been taken with and without flash, hence the differences in colour.