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2. Rangefinder - Wikipedia

   en.wikipedia.org/wiki/Rangefinder

   A long-range laser rangefinder is capable of measuring distance up to 20 km; mounted on a tripod with an angular mount. The resulting system also provides azimuth and elevation measurements. A laser rangefinder, also known as a laser telemeter, is a rangefinder that uses a laser beam to determine the distance to an object.

3. 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 ...

4. Specter (sight) - Wikipedia

   en.wikipedia.org/wiki/Specter_(sight)

   The optic has two standard reticles: both are a cross, feature a range finder out to 600 m (656 yd) for 5.56x45 and 800 m (875 yd) for 7.62x51, where they differ is in the bulletdrop design, where the one called CX5395/CX5396 uses circles to denote the range, while the other called CX5455/CX5456 uses lines and also features lines for windage.

5. 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.

6. Stadiametric rangefinding - Wikipedia

   en.wikipedia.org/wiki/Stadiametric_rangefinding

   Soldier observed at 400 m: The stadiametric rangefinder in the bottom-left corner of the PSO-1 telescopic sight reticle can be used to determine the distance from a 1.70-meter (5 ft 7 in) tall person or object from 200 m (bracket number 2 to the right) to 1,000 m (bracket number 10 to the left).

7. AN/PVS-4 - Wikipedia

   en.wikipedia.org/wiki/AN/PVS-4

   Later designations such as the AN/PVS-4A use two common AA batteries (BA-3058/U) via a purpose-built adapter (PN A3009873) that attaches to one of the circular battery compartments. Use of the adapter negates the need for BA-5567/U and BA-3058/U. AN/PVS-4s still in use today are typically upgraded with the AA battery adapter even if they have ...