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.
General view of Simplex machine with new lamp house, from front.
Simplex machine with lamp house detail, interior lantern.
The Precision Machine Co. View of Simplex machine with new lamp-house and motor control.
[Machine.]
View of Simplex automatic arc feeder.
[Simplex projector.]
1918 Exhibit, Madison Square Garden, interior, Simplex projector.
Accounting machine
Accounting machine.