Details
A 19th-Century electro-magnetic induction machine,
with maker's metal label engraved Griggs Conical Electro-magnetic Machine, by Royal Letters Patent, 33 Eastbourne Terrace, Hyde Park, LONDON, maker J.R. Chislett Plymouth, the mahogany cone with adjustable iron wire screw, with scale divided 0-75, mounted on a base stamped 1540, with coil, contact mechanism, four lacquered-brass contact points, with various wires and accessories, in the original oak carrying case with brass handle and two hooks and eyes -- 9.5/8in. (24.4cm.) wide
See Illustration and Detail
with maker's metal label engraved Griggs Conical Electro-magnetic Machine, by Royal Letters Patent, 33 Eastbourne Terrace, Hyde Park, LONDON, maker J.R. Chislett Plymouth, the mahogany cone with adjustable iron wire screw, with scale divided 0-75, mounted on a base stamped 1540, with coil, contact mechanism, four lacquered-brass contact points, with various wires and accessories, in the original oak carrying case with brass handle and two hooks and eyes -- 9.5/8in. (24.4cm.) wide
See Illustration and Detail