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2. Brinell scale - Wikipedia

   en.wikipedia.org/wiki/Brinell_scale

   The Brinell hardness is designated by the most commonly used test standards (ASTM E10-14 and ISO 6506–1:2005) as HBW (H from hardness, B from brinell and W from the material of the indenter, tungsten (wolfram) carbide). In former standards HB or HBS were used to refer to measurements made with steel indenters.

3. 2-10-10-2 - Wikipedia

   en.wikipedia.org/wiki/2-10-10-2

   ATSF 3000 class 2-10-10-2. The forward section of the boiler is a primitive superheater and feedwater heater. In 1911 and 1912, the Atchison, Topeka and Santa Fe Railway modified ten 2-10-2 Baldwin -built locomotives into a new 2-10-10-2 configuration dubbed the 3000 class. They were the largest locomotives in the world from their introduction ...

4. 2nd Battalion, 10th Marines - Wikipedia

   en.wikipedia.org/wiki/2nd_Battalion,_10th_Marines

   2nd Battalion 10th Marines (2/10) is an artillery battalion of the United States Marine Corps comprising two cannon batteries, three rocket batteries, and a headquarters battery. The battalion is stationed at Marine Corps Base Camp Lejeune, North Carolina and its primary weapon systems are the M777A2 howitzer [1] with a maximum effective range ...

5. Engineering drawing abbreviations and symbols - Wikipedia

   en.wikipedia.org/wiki/Engineering_drawing...

   EO, ECO, ECN. engineering order. An order from the engineering department (to be followed by the production department or vendor) overriding/superseding a detail on the drawing, which gets superseded with revised information. Also called by various other names, such as engineering change order (ECO), engineering change notice (ECN), drawing ...

6. 10th Cavalry Regiment (United States) - Wikipedia

   en.wikipedia.org/wiki/10th_Cavalry_Regiment...

   The 10th Cavalry Regiment is a unit of the United States Army. Formed as a segregated African-American unit, the 10th Cavalry was one of the original "Buffalo Soldier" regiments in the post– Civil War Regular Army. It served in combat during the Indian Wars in the western United States, the Spanish–American War in Cuba, [2] Philippine ...

7. Ten-code - Wikipedia

   en.wikipedia.org/wiki/Ten-code

   Ten-code. Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1]

8. Category:2-10-2 locomotives - Wikipedia

   en.wikipedia.org/wiki/Category:2-10-2_locomotives

   2-10-2 locomotives. Wikimedia Commons has media related to 2-10-2 locomotives. Locomotives classified 2-10-2 under the Whyte notation of locomotive axle arrangements. The equivalent UIC classification of locomotive axle arrangements is 1′E1′ locomotives.

9. Category:2-10-4 locomotives - Wikipedia

   en.wikipedia.org/wiki/Category:2-10-4_locomotives

   Category. : 2-10-4 locomotives. Help. Front of locomotive at left. Wikimedia Commons has media related to 2-10-4 locomotives. Locomotives classified 2-10-4 under the Whyte notation of locomotive axle arrangements. The equivalent UIC classification of locomotive axle arrangements is 1E2 or 1'E2'.