CHEMCO

PHOTOGRAPHIC, PHOTO-ENGRAVING, AND PHOTOMECHANICAL APPARATUS, MACHINES, APPLIANCES AND SUPPLIES-NAMELY, ROLL CAMERA, OFFSET CAMERAS, CONTACT SCREEN HOLDERS FOR HALFTONE CAMERAS, DEPTH GAUGES FOR USE IN POSITIONING OPTICAL ELEMENTS SUCH AS THE LENS AND SCREEN OF A PHOTOENGRAVING CMERA, SCREEN SEPERATION GAUGES FOR HALFTONE CAMERAS, DISAPPEARING SCREEN MECHANISMS, DISAPPEARING SCREEN MECHANISMS, STRIPPING CABINETS, STEEL RULERS, CAMERA SHUTTERS