Check the listing for details. Peak Stereoscopic Viewer - 3D Stereo Viewer - Three-Dimensional Viewer. Condition: Used. Listed at 76.98 USD. Item Description: The Peak Stereo Viewer is a simple device for viewing a series of aerial images in three dimensions. This viewer is supported by two metal legs that fold out into a standing position. It is then placed over the aerial photos spread out on a flat surface and the photos are viewed through the two lenses with both eyes at the same time. The coated glass lenses have a diameter of 32 mm and a magnification power of two times. The lenses can be easily adjusted to the distance between the eyes. All prices contain the statutory sales tax, but due to various tax types, this cannot always be shown separately on the invoice. In tax class 1, the sales tax is shown separately on the invoice, tax class 2 reduced sales tax and tax class 3 is not possible to identify the sales tax, since.