Traditional Tatar units of measurement were used by Tatars until 1924 but became obsolete when the Soviet Union adopted the metric system.
The Tatar system shares many units with the Russian system (e.g. sajın and disätinä), which is close to the English (the Russian system under Peter the Great was redefined relative to the English system), therefore a duym is relatively equal to an inch. This list includes their Tatar language names.
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The Bell XP-83 was a United States prototype jet escort fighter designed by Bell Aircraft during World War II. It first flew in 1945. As with most early first generation jet fighters, the design was hampered by a relative lack of power. With the rapid advancements in jet technology post-WWII, the XP-83 was soon eclipsed by more advanced designs and it never entered production.
The batman was a unit of mass used in the Ottoman Empire and among Turkic peoples of the Russian Empire. It has also been recorded as a unit of area in Uyghur-speaking regions of Central Asia. The name is Turkic, but was also sometimes used for the equivalent unit in Persia. The equivalent unit in British India was anglicized as the maund. The value of the batman varied considerably from place to place.
The Aero A.42 was a Czechoslovakian bomber aircraft of 1929 that was only ever produced in prototype form. For its day, it was an advanced design, with a sleek monoplane configuration. However, the Czechoslovak Air Force was not satisfied with it for a number of reasons. In particular, the aircraft's take-off and landing runs were felt to be excessively long, and crew complained about the cramped cabin. The air force suggested a set of modifications to Aero, including replacing the wooden wing with a metal one, but Aero discontinued development.
The Lockheed XB-30 was the design submitted by Lockheed after the request by the United States Army Air Forces for a very heavy bomber, the same request that led to the Boeing B-29 Superfortress, the Douglas XB-31 and Consolidated B-32 Dominator.
The Focke-Wulf Fw 191 was a prototype German bomber of World War II, as the Focke-Wulf firm's entry for the Bomber B advanced medium bomber design competition. Two versions were intended to be produced, a twin-engine version using the Junkers Jumo 222 engine and a four-engine variant which was to have used the smaller Daimler-Benz DB 605 engine. The project was eventually abandoned due to technical difficulties with the engines.
The units of measurement in use in Denmark are currently part of the metric system. A variety of other historical weights and measures have been employed throughout the nation's history.
The Vought XF3U was the prototype of a two-seat, all-metal biplane fighter, built by Vought Aircraft Company of Dallas, Texas for the United States Navy.
The Hawker Hedgehog was a three-seat reconnaissance biplane, to be used for naval scouting, produced to meet Air Ministry Specification 37/22.
The Hawker Danecock biplane was developed from the Hawker Woodcock for the Danish air force and naval service.
The Albatros L 75 Ass was a German trainer biplane of the 1920s. Of conventional configuration, it seated the pilot and instructor in separate, open cockpits. The wings were single-bay, equal-span, and had a slight stagger. Production continued after Albatros was absorbed by Focke-Wulf.
The Kampar Kanan River is a river in Riau province, Sumatra island, Indonesia. It is a tributary of the Kampar River.
A number of different units of measurement were historically used in Cyprus to measure quantities like length, mass, area and capacity. Before the Metric system, the Imperial system was used. In between 1986-1988, metric system was adopted in Cyprus.
A number of units of measurement were used in Egypt to measure length, mass, area, capacity, etc. In Egypt, the metric system was made optional in 1873 and has been compulsory in government use since 1891.
A number of units of measurement were used in Hungary to measure length, area, volume, and so on. The metric system was adopted in Hungary in 1874 and has been compulsory since 1876.
A number of units of measurement were used in Iceland to measure length, mass, area, capacity, etc. Since 1907, the metric system has been compulsory in Iceland.
A number of units of measurement were used in Indonesia to measure length, mass, capacity, etc. Metric system adopted in 1923 and has been compulsory in Indonesia since 1938.
A number of units of measurement were used in Switzerland to measure length, mass, etc. Metric system was optional in 1868, and has been compulsory since 1877.
A number of different units of measurement were used in Libya to measure length, mass, area, etc. The metric system was adopted in Libya in 1927.