Institute of Electrical and Electronics Engineers | Electrical Engineering | electrical engineering | Electrical engineering | Royal Electrical and Mechanical Engineers | University of Belgrade Faculty of Electrical Engineering | Electrical substation | Military discharge | International Brotherhood of Electrical Workers | Faculty of Electrical Engineering | Electrical impedance | Moore School of Electrical Engineering | Electrical polarity | Electrical network | Electrical grid | electrical connector | Discharge | Amalgamated Engineering and Electrical Union | Machining | machining | lamp (electrical component) | Electrical telegraph | electrical grid | Discharge (band) | Associated Electrical Industries | Transcutaneous electrical nerve stimulation | National Electrical Manufacturers Association | International Electrical Testing Association | High-intensity discharge lamp | Electrical Trades Union of Australia |
They are punched or wire Electric Discharge Machine (EDM) specially cut from aircraft quality steel plate 4130.