Aperçu gratuit du livre British Standard Specification for Five-Ampere, Fifteen-Ampere and Thirty-Ampere Two-Pin Wall Plugs and Sockets for Domestic Purposes (Without Earthing Connection): Revised December, 1919 (Classic Reprint)
British Standard Specification for Five-Ampere, Fifteen-Ampere and Thirty-Ampere Two-Pin Wall Plugs and Sockets for Domestic Purposes (Without Earthing Connection): Revised December, 1919 (Classic Reprint)