Precision Machine Co. View of inserting movement in machine.

Brooklyn Union Gas. Co., Pulmotor in action.

[Machine.]

Simplex machine.

Simplex machine.

Small machine.

Large machine.

[Machine room.]

Precision Machine Co. View of inserting movement in machine.

Precision Machine Co. View of inserting movement in machine.

Berg surfacing machine.

[Detail, machine part.]

Simplex machine.

Small machine.

Small machine.

Large machine.

Machine closed.

Accounting machine.

Postage stamp slot machine.

Soundscriber machine for playback.