File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14590292409).jpg - Wikimedia Commons
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File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14774430461).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14590872460).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14590839860).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14777601755).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14777239422).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14797389353).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14590503747).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14777534455).jpg - Wikimedia Commons
File:Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914) (14591032247).jpg - Wikimedia Commons
