Weston Normal Cell By Tinsley & Co This is a portable Vintage Weston Normal Cell By Tinsley & Co, 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 beautiful wood case covering the brass top with 2 connections marked ‘+’ and ‘-’. It is labelled: Weston Normal Cell 1.01824 Int Volts at 20˚C H Tinsley & Co. London SE25 No. 29146 Invented by Edward Weston in 1893, it was adopted as the International Standard for EMF from 1911 until superseded by the Josephson voltage standard in 1990.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 Width 9.5 cm Depth: 9.5 cm Height: 15.2cm / 6" 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. H. Tinsley & Co. Ltd H. Tinsley & Co. Ltd were based in London, England. They were, and still are, manufacturers of Precision Standards and equipment for calibration and measurement. The company started with the manufacture of the first commercially manufactured Weston Standard cells in England in 1905. They are now known as Tinsley Precision Instruments and are based in Surrey, England.
