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