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2. Leupold & Stevens - Wikipedia

   en.wikipedia.org/wiki/Leupold_&_Stevens

   Leupold & Stevens, Inc. is an American manufacturer of telescopic sights, red dot sights, binoculars, rangefinders, spotting scopes, and eyewear located in Beaverton, Oregon, United States. The company, started in 1907, is on its fifth generation of family ownership.

3. Telescopic sight - Wikipedia

   en.wikipedia.org/wiki/Telescopic_sight

   Some scope bases, such as Leupold & Stevens's proprietary STD mounts, use socketed bases screw-fastened to the receiver and a twistlock-like interface to secure the accompanied scope rings. An alternative design that has remained popular since the early 20th century is the dovetail rail , which is a straight metal flange with an inverted ...

4. List of the United States Army fire control and sighting ...

   en.wikipedia.org/wiki/List_of_the_United_States...

   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.

5. Stadiametric rangefinding - Wikipedia

   en.wikipedia.org/wiki/Stadiametric_rangefinding

   Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms, artillery pieces, or tank guns, as well as some binoculars and other optics. It is still widely used in long-range military sniping , but in many professional applications it is being replaced with microwave , infrared , or laser rangefinding methods.

6. Coincidence rangefinder - Wikipedia

   en.wikipedia.org/wiki/Coincidence_rangefinder

   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 ...

7. Unertl Optical Company - Wikipedia

   en.wikipedia.org/wiki/Unertl_Optical_Company

   Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1928 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper Carlos Hathcock during the Vietnam War.