Simplex Machine Co. Detail of Rheostat.
Simplex machine, general view.
Simplex film inspecting machine.
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.
Simplex machine, general view with rheostat attached.
The Precision Machine Co. Simplex motion picture camera.
Detail of KX addressing machine.
Small addressing machine, K-X machine, detail from below.