Range Finder Cased 13E

• The Range Finder 13E is a coincidence type range finder consisting of two telescopic systems mounted on a common frame and having a common eyepeice in the middle of the frame.It is so designed that on directing the instrument towards a distance object,two images of the same object are seen separately when observed through the common eye piece.The right telescope forms an upright image in the lower field while the left system forms an inverted 'mirror' image in the upper abd kiwerm are seoarated by a very fine line,called the halving line or dividing line.The image in the upper field remains stationary.When the image in the lower field is moved and brought in coincidence with the upper inverted image simultaneously range scale also moves against a pointer to show range in meters.