Precision Machine Co. View of inserting movement in machine.
Precision Machine Co. Inserting slide [into] slide carrier.
Precision Machine Co. Pulling out slide.
The Precision Machine Co. View of Simplex machine with new lamp-house and motor control.
The Precision Machine Co. Simplex motion picture camera.
View of machine.
View of pathescope [machine].
Truscon Steel Co., piles of inserts.