Details
A wave demonstration machine,
with label for Phillip Harris & Co Birmingham, the crank with twenty-two concentric drive-wheels, rods and demonstration spheres, guided by two vulcanite frames, raised on two mahogany supports and plinth base -- 18in. (45.7cm.)wide
See Illustration
with label for Phillip Harris & Co Birmingham, the crank with twenty-two concentric drive-wheels, rods and demonstration spheres, guided by two vulcanite frames, raised on two mahogany supports and plinth base -- 18in. (45.7cm.)wide
See Illustration