WESTERN ELECTRIC IMPEDANCE BRIDGE 2A, 1920's

Made by Western Electric in the U.S.A. and used by I.S.E.C. Development and Research Laboratories Hendon, finally making it's way to Standard Telecommunication Laboratories in Harlow; this impedance bridge model 2-A has lasted for over 100 years and is still in usable condition, although a little worse for wear.

Donated by John Barnes

A1863