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Eyepiece image of a naval rangefinder, showing the displaced image when not yet adjusted for range. The coincidence rangefinder uses a single eyepiece. Light from the target enters the rangefinder through two windows located at either end of the instrument. At either side the incident beam is reflected to the center of the optical bar by a ...
A stereoscopic rangefinder or stereoscopic telemeter [1] is an optical device that measures distance from the observer to a target, using the observer's capability of binocular vision. It looks similar to a coincidence rangefinder, which uses different principles and has only one eyepiece. German instruments tended to use the stereoscopic ...
A laser rangefinder, also known as a laser telemeter, is a rangefinder that uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by sending a laser pulse in a narrow beam towards the object and measuring the time taken by the pulse to be reflected off the ...
The Argus C3 was a low-priced rangefinder camera mass-produced from 1939 to 1966 by Argus in Ann Arbor, Michigan, United States.The camera sold over 2.2 million units, making it one of the most popular American cameras in history.
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
Unless you're really fond of its lens system, Leica's M-series range-finders have always been a tough sell -- models like the M8 and M9 have limited features, and they cost a fortune. Leica has ...
Once some shots had been fired, spotters would report the fall of shell (which could be observed because of the large waterspouts where the shells hit the sea) and the range would be corrected up or down depending whether the shells were short or over the enemy. Initial estimates of range were obtained using optical rangefinders.
The Nikon was the first camera introduced by the optical manufacturer Nippon Kogaku KK. [1] It is a 35mm rangefinder camera, in retrospect known as the Nikon I. [2] The original design was approved by September 1946, and the camera was released in March 1948.
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