Megger Line-Earth loop tester, serial number 1800453, made in England by Evershed and Vignoles Ltd. Megger Line-Earth loop tester 1930-1949
Megger Line-Earth loop tester, serial number 16244849, go/no go lamp indicating type, made by Evershed and Vignoles Ltd. Megger Line-Earth loop tester 1960-1979
