CMN Cadets. Training with Bofors 75mm and Cael Zeiss Telescopes. 2X 12º ?
Venturino Scope. Maximo Venturino was an Army Captain, who diseigned some optical elements such as measurement. Caras y Caretas 1913.
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Soldados 1848-1927/Editorial Fundacion Soldados
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Optical sight devices, equipments , gonometric, telemetro, ranger finder, periscope, range indicator. Measuring instruments for anti-aircraf and field artillery use.  

Predictor Vickers.
Source: Generalidades sobre materiales y empleo de la artillería antiaérea".
Rev. del Suboficial. Nro 232. Junio 1938. Leutnant.
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OPL Rangefinder for artillery, 3mts base.  The rangefinder (telemetro in Spanish) is a device that measures the distance to a target.  They came into popular use in the 19th century when trigonometry was used to make the measurements.  Nowadays laser and radar are the norm in rangefinders.
Kommandogerät 4-meters base rangerfinder
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Doppelfernrohr flakglas ? Anti-Aircraft Artillery. Zeiss Nedinsco 10x80 (?) binocular sighting system for the searchlight?.
Original binoculars and case from the Argentine military in the 1940s.  Binnerbini Collection. The photo in the middle is a recreation.

Argentine Infantry & Cavalry Invert-Telemeter, marked Carl Zeiss Jena

German Nedinsco-Carl Zeiss (jena) 4x31, French 3x30 SOM (1891 Mauser) and japanese 4x33 SUWA civilian scope, (Light Optical Works Ltd.) scopes.

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Left: Nedinsco scope's leather case. Right: Argentine infantryman with a model 1909 fitted with a Nedinsco Carl Zeiss 4x31 sight. Source Argentine Mauser Rifles 1871-1959 by Colin Webster.
ZEISS  JENA Scope 6 x 42.

NVG Night Vision Goggles, (AN/PVS-2 ; AN/PVS-5)

"Starlight", AN/PVS-2 Gen 1.
Mounting piece designed for M14’s and  M16’s
 PVS-5A/B Generation-2 Night Vision Goggles.

Flashlight

FULTON N47 right-angle flashlight.
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Rangefinder Scope, 1m R-36. 6th Regiment Infantry of Mercedes (1939)
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Telemeter German made, ex-Argentine) for target.
http://thedonovan.com/archives/cat_general_militaria.html

Rangefinders from 1st Infantry Regiment Patricios, (1944)

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Wetzlar Carl Zeiss. Binocular trench telescope-periscope type ranging optics.
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Range finder and case.
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Range finder. Carl Zeiss Jena Entfernun (?)
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Sight carrier device (?)
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5th Mountain Detachment, (Covunco Centro Neuquen) 1955.
 Scherenfernrohr :Trench binoculars/periscope/stereoscopic; "Scissors telescopes; Rabbit Ears" Carl Zeiss. 

ARTILLERY FIRE CONTROL

Surveying, optical-calibration, instruments. Fire directors, clinometer and oscillating  sight  and other optical artillery equipments sight carriers or mount on tripodes, etc.

Photos: Artillery School, May Field 1945/48

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Azimuth Finder for surveillance thopographical work (?)
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Optical director.
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Telescope optical director. It was mounted on a tripod.
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Artillery spotting telescope
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Parallelescope (?)
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6Th Infantry Regiment. Mercedes 1939. 

Heliograph

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6Th Infantry Regiment 1944. Gral Viamonte.
Mountain Troops

Orientation Equipment: Maps and Compass in Land Navigation.

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Original Compass (Cruchon & Emons), from the Argentine Military, used until the 1980s.  Binnerbini Collection.
Compass pouch.
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Infantry Soldiers of the Patricios Regiment checking their assigned compass. These brass mirror compasses may have been the Swiss type, which were acquired by the US Engineer Corps during WWI and the Argentine military.  This one has the marking EA (Ejercito Argentino) or Argentine Army.
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Canadian Chevys and No 3 MK 7 AA Radar (?)
No 3 MK 7 AA Radar. Photo: Wikipedia.