Simplex machine.
Simplex film inspecting machine.
Simplex machine, general view.
Simplex Machine Co. Detail of Rheostat.
Simplex machine, general view with rheostat attached.
The Precision Machine Co. Simplex motion picture camera.
Simplex machine with lamp house detail, interior lantern.
General view of Simplex machine with new lamp house, from front.
The Precision Machine Co. View of Simplex machine with new lamp-house and motor control.
[Machine.]
[Simplex projector.]
View of Simplex automatic arc feeder.
1918 Exhibit, Madison Square Garden, interior, Simplex projector.
Accounting machine.