Details
A late 19th-Century Sir William Thomson's Rheostat No. 4
by James White of Glasgow, patented 1886, mounted on mahogany plinth base, and contained in the original pine carrying case -- 15 3/8in. (39cm.) long
See Illustration
by James White of Glasgow, patented 1886, mounted on mahogany plinth base, and contained in the original pine carrying case -- 15 3/8in. (39cm.) long
See Illustration