![](http://www.alamy.com/thumbs/6/9761C891-FF5C-4CCB-BA55-8062AE0B4214/HFJMJE.jpg)
Evershed and Vignoles Megger hand wound high voltage insulation tester. Electrician's must have instrument from 1940s
Size: 3972px × 2648px
Photo credit: © David Porter Fine Images / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: evershed, high, instrument, insulation, measure, measurement, megger, megohms, ohm, ohmmeter, ohms, tester, vignoles, vintage, voltage