View of Simplex automatic arc feeder.
Simplex machine, general view.
Simplex machine, general view with rheostat attached.
Simplex machine.
General view of Simplex machine with new lamp house, from front.
Simplex Machine Co. Detail of Rheostat.
[Simplex projector.]
Simplex film inspecting machine.
[Gas Arc Lighting.]
The Precision Machine Co. View of Simplex machine with new lamp-house and motor control.
Broadway and John Street. Automat, detail of entrance.
1918 Exhibit, Madison Square Garden, interior, Simplex projector.
The Precision Machine Co. Simplex motion picture camera.
Cross Paper Feeder Co.
Simplex machine with lamp house detail, interior lantern.