Simplex machine, general view.
Simplex Machine Co. Detail of Rheostat.
Machine with rheostat.
General view of Simplex machine with new lamp house, from front.
Simplex film inspecting machine.
Simplex machine with lamp house detail, interior lantern.
The Precision Machine Co. View of Simplex machine with new lamp-house and motor control.
The Precision Machine Co. Simplex motion picture camera.
View of Simplex automatic arc feeder.
View of machine.
Rheostat without lid.