The 'Automatic Coil Winder and Electrical Equipment Co.' were later renamed 'AVO Ltd.' (which should not be mixed up with 'Avo International Ltd.). AVO is known for it's very solid and reliable measuring instruments, and coil winding machines. Took over Evershed and Vignoles Ltd who manufactured the 'megger' range of electrical testing apparatus. Circa 2006, the name changed to Megger Ltd.