Precision Machine Co. View of inserting movement in machine.
Precision Machine Co. Inserting slide [into] slide carrier.
The Precision Machine Co. Simplex motion picture camera.
Precision Machine Co. Pulling out slide.
The Precision Machine Co. View of Simplex machine with new lamp-house and motor control.
View of machine.
View of pathescope [machine].
Universal Draughting Machine Co. Interior of Lidgerwood Manufacturing Co., ledger room.