ENG RUS Description. (ENG) Universal binoculars for all divisions was binoculars 6X30 'Dienstglass. Military 6x30 Binoculars / WWII Vintage DDX (Voigtlander) Binoculars. Dates: 1940s Serial number: 315241 Other markings: DDX, Dienstglas 6x30.

German WWII Dienstglas 6x30 ddx. Binoculars with strap and cover. The serial number is 319079.

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Doppelfernrohr - (Dienstglas 6 x 30 Service Glasses) The German army used an extensive variety of optical equipment during the war, items such as the 6 x 30 power binoculars (6 power magnification with a 30mm diameter objective lens) were one of the most common types seen since they were the standard issue field optics utilized by all branches of service. These are generally encountered in a black painted finish and were typically constructed from zinc and aluminium alloy metal. Late war (post 1943) manufactured glasses came in an ordnance tan paint finish often fitted with moulded brown Bakelite fittings and some encountered were manufactured entirely from Bakelite. The right lens usually has a horizontal reticle pattern with vertical bars originating from the centre, in increments of 10 degrees up to 40 degrees to each side.

Standard markings on the body can normally be found on the left hand side, ocular body panel with the impressed designation, 'Dienstglas 6 x 30', (Service Glasses) along with a production serial number. The right hand ocular body panel is also often marked with the impressed manufacturer’s three letter code in this case being 'cxn' - the code for Emil Busch A-G, Optische Industrie, Rathenow. Most service glasses came in either a leather or moulded Bakelite case to afford maximum protection during service life. Since the 6 x 30 power binoculars were of a relatively low magnification being well-intentioned for just general field observations, specialized troops such as Kriegsmarine, Artillery observers, Reconnaissance personnel, Flak & Searchlight personnel etc required far stronger optics and assorted larger more powerful binoculars were issued to these specialized personnel on a limited basis.

Doppelfernrohr - Dienstglas 10 x 50 Service Glasses In 1934 the German OKW, Oberkommando der Wehrmacht, (High Command of the Armed Forces), requested a mobile, multi-purpose, high power binocular with a wide field of vision. The Emil Busch optical firm of Rathenow submitted a 10 x 50 power binocular which was found suitable and accepted for production.

The 10 x 50 power binoculars were produced by assorted optical firms in three minor variants with the main difference being in the angle alignment of the prism and ocular lenses with a twenty degree angle pattern, a forty-five degree angle pattern and eighty degree angle pattern. This set is stamped 'blc', indicating that they were manufactured by Carl Zeiss.

EM34 & EM36 Entfernungsmesser 1m - Range Finder When using any artillery or anti-aircraft guns effectively, accurately estimating range to the target is critical to the success of a direct hit on the target. Many armies around the world employed optical equipment specially designed for range finding and although most looked very similar in design, two schools of thought existed with one type working on the theory of coincidence and the other being a stereoscopic based vision system. The German’s like most other armies favoured the coincidence of images principal. These Rangefinders using this coincidence theory work on the known principal of triangulation were by knowing the distance between two points which we call the base line (i.e. The two objective lens being 1000mm apart in the device) and the angle of these two points relative to the target, one can work out the distance by using trigonometry.

In the R36 this calculation is worked out with a very complicated internal mechanical computer which reads out the data using dials and a split overlaid image reticule seen through the view finder which the viewer matches up and reads off the scale the distance to target. However to do this the operator must have extremely good eye sight to accomplish this accurately so candidates must be evaluated for suitability first. Worth remembering also is that the bigger the baseline the more precise the ranging is and to this end Germans employed range finding equipment frequently up to 4 metres in length specially developed for coastal and anti-aircraft batteries because of the typically large distances involved ranging ships and high altitude aircraft. Naturally of course the limitations of accuracy reached are often dictated by air quality and weather conditions and then ultimately the curvature of the earth.