Aometer, for indicating the amount of current being applied during electro-therapy, developed by Allen ('A') and Oliver ('O') and adapted for the use of blind physiotherapists. Provided by the Department of Health and manufactured by Electro Medical Supplies (Greenham) Ltd (EMS), Wantage, England, 1960-1970 Aometer, for indicating the amount of current being applied during electro-therapy 1960-1970