Profile: Tower Optical Co., Inc. specializes in offering binocular viewers. Our manual-focus 10x42 binocular provides magnification 10 times that seen by the unaided eye. The prism design produces sharp, well-defined images by virtually eliminating internal light scattering. A wide field of view (318 feet-1,000 yards) provides for easy location of objects. The unit has a chromium-plated, cast bronze housing with internal components of bronze and stainless steel. The cast iron base is painted with a weather-resistant, oil-based enamel.