Grigg's electromagnetic machine in mahogany box
Grigg's electromagnetic machine in mahogany box, with conical induction coil and electro-magnet, invented and patented by Grigg's, made by J.R. Chislett, Plymouth, English, 1880-1890
Grigg's electromagnetic machine in mahogany box, with conical induction coil and electro-magnet, invented and patented by Grigg's, made by J.R. Chislett, Plymouth, English, 1880-1890
Grigg's electromagnetic machine in mahogany box, with conical induction coil and electro-magnet, invented and patented by Grigg's, made by J.R. Chislett, Plymouth, English, 1880-1890