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